anistone

Uo.
1
J u ly S, 1559 J
W a v e velocities
Serial
No,
1
2
3
4
6
6
7
6
»
10
11
12
317
Letters to the Editor
Kock type
T able I
(Ic m ./s c c .) and m o d u li (1 0 " dynes/cm .^)
P
P
Locationt gm.Icc..
%
2-48
2-68
2 -OS
„
2*71
*
••
Migmaiitic quart 71te
Daihoujle 2-68
2-68
.,
••
2*67
il
1
••
Si'.aly i-ani.stone . • Simla hltls 2-62
Chor area 2-7.3
Aagen gneiss
2-74
1»
2-75
M
**
2-66
Teffury granite . . Manni
Migtnatite
••
Orliicularguartate
DalkouVie
Hara3'ana
U -5
0-2
0-2
0-2
0*4
0*4
0*4
3-0
0-6
0*6
0 -e
l-U
< Vs
Vr
(=»)
1-49
e -00
6‘00
5-92
4*10
4-20
4-»5
3'54
5-2S
5H0
5*33
4-20
w
(0
2-09
5-75
5-73
5-87
0*63
J*31
3-35
4*17
4*97
5'35
4“89
3>84
3-22
3-34
3-22
2-43
S - il
2-;)B
1'81
2-34
2*97
2-89
2 '4 5
2-81
2-&8
2 ’89
1-98
2-06
1-97
2-17
««
*•
2*25
K
9
Es
Voiing’s R'cfdity Bulk Poissan’s
inodulos modulus modular ratio
7*20
7-65
6*79
4-09
S-91
3*75
2-27
5-72
8-17
6*01
3-9*
2 ’77
2'99
2-81
1'61
I'S S
1-49
0-86
2-20
2*39
2-31
1'59
5'95
5-67
5 '52
3-05
2*67
S-64
2-14
4'59
4*80
4'84
2'67
0-30
O'28
0*30
0-27
0*26
0-2S
0-32
0-^<)
0-29
0-30
0-24
t The samples are provided by the Department of GeoJogy, Tutijab University.
v alu es ‘P ’ a re r e p o r t e d in Table I. T h e o b s e r­
v atio n s in th e lo n g ( a ) a n d sh o rt (b ) d ire c tio n s
o l the rock c y lin d r ic a l specim ens a r e also
included. H o w e v e r t h e elastic m o d u li a r c com p u te d Irom th e v e lo c ity d ata o f t h e lo n g er
direction.
I t is o b serv ed t h a t th e rock ty p e s stu d ie d
a r e highly a b s o r p tiv e a n d e x h ib it lo w velo city
v alu es. In t h e c a s e o l m igm atite (m e d iu m grrained and g r e y -c o lo u r e d ) w hich is highJj'
porous (1 1 -5 % ), t h e
itself is f o im d to be
lo w w ith th e r e s u lt , shear w’a v e p ro p a g a ­
tio n could n o t b e stu d ied in th a t,
i n tha
o rb ic jia r q u a r tz ite
(fln e-g rain ed a n d buiTcoJoured) w h ich is a com pact a n d h ig h ly
m etam orphosed r o c k , th e velocity v a lu e s are
fo u n d to be h ig h . M ig in atitic q u a r tz ite (c o m ­
p a c t, m e d iu m -g ra in e d and g r e y is h - b la c k in
colour) is a n in te rm e d ia te case,
Shaly s a n d sto n e
(v e ry fin e -g ra in e d and
greyish-black in c o lo u r) and a u g e n gneiss
(bIacl{-coloured a n d fine-grained) f a l l in the
in term ed iate c a te g o r y . T he re su lts i n te rtia r y
g ra n ite w hich is m ed iu m -g ra in e d , le u c o c ra tic ,
w ith the to u r m a lin e cry sta ls bein g v is ib le a r t
found {0 be lo w e r t h a n those of p re c a m b ria n
granites. This is i n ag re e m e n t w ith t h e re su lts
rep o rted by H a y a k a w a and B a la k ris h n a ^ on
gran ites from d if f e r e n t countries in -w hich the
reaso n s fo r t h e d iffe r e n c e in v e lo c itie s are
attrJb u ted to t h e d ifferen ces of t h e d e p th of
original fo rm a tio n a n d the age, A s ex p e cted
th e elastic w a v e v elo cities o f th e ro c k types
stu d ied a re fo u n d to increase w ith t h e in cre ase
i o density a n d d e c r e a s e w ith th e in c r e a s e in
poroflity. I n g e n e r a l i t is observed t h a t te rtia ry
f'OclEt ehow lo w v e lo c ity values,
W e w is h t o express o u r th a n k s to Prof, I. C.
P ande, P u n j a b U niversity, C h a n d ig a rh , fo r
p ro v id in g th e sam ples, a n d t o D r, S. B alak ris h n a f o r h is guidance a n d encouragem ent,
a n d to D r . I l a i i N arain, D ire c to r, N.G.R.I., for
p e rm is sio n t o p u b lish th is n o te .
N a tio n al G e o p h y s. M. V. M- S a t y a n a r a y \ n a .
R es. I n s t.,
B. V e w k a t a n a r a y a n a .
H y d e ra b a d -7 ( A .P .),
M arch 31, 19S9.
R
ao
,
• N.G.-R.l., 69. 140.
1. Balakrishra, S., Puil. [ I Z V) Acad. Sci. USSR,
Geophys Ser., 196B, No. 5, 3.
2. —, Ramana. Y. V. ami Satyanarayana Rao, M. V, M •
Bt.-n. N .G .n .l., 1908, 6 ( i ) , i,
3.
Ifayakaw a,
M,
and
Ealaki i s h i i a ,
S-,
GtPphytical
Pm spKtins\ 1951, 9 ( 1 ) , T4.
C A L A J J O P I A Z E Y M O U R l S P . NOV.
( C O P E P O D A : C A L A N O I D A ) FROM
T H E ANDAMAN SEA*
I m th e c o u r s e of studies o n th e pelagic
C opepoda o f A ndam an S e a s n undescribed
species o f calanoid copepod o f the genus
C clanopxa D a n a w as e n c o u n te re d i n th e plank*
ton c o lle c tio n s m ad e fro m N ic o b a r w aters. T h e
d e s c rip tio n o f th e new sp ecies follow s.
CaCanx3pt<t sei/nw ntrt S p . N
ov.
( F ig . 1, o - j )
M a te ria l.— H olotype C M F R I R eg. No. 113,
F s m s le ,
2 -6 2 m m ., fro m
s u r f a c e plankton
co'.lcctcd o n 2S-4-1858, 17-00-17-25 hours from
N ancow T ie H a rb o u r, N a n c o w rie I s la n d s ; A llo­
ty p e C M F E I Beg. No. 114, M ale,
fro m s a m e sam p le a s h o l o t y p e ; Paratypes
C M F R I H eg . N o. IIS, 29 M a le s a n d 29 Fem ales
co llec te d
u ro u n d Covnorta
snd
Cham pion
Islan d s, N lc o b a rs. Tb« t y p e specim ens a re
.UN
Letters to the Editor
deposited in th e research c o lle c tio n s of the
Central M a r in p F ish eries R e s e a rc h Institute,
M andapam C a m p .
D rscrip tio ji.— PcniQle (Fig. 1, a - e ) : Length
range 2-49
to
2 -6 2 m m .; p ro so m e -u ro so m e
FlC. 1. C*!anc>pia stymoiiri ?p. nov. Female : a, (torsa!
view ; />, iiroiome. dorsal view ; r, urosome, lateral view ;
</, roslrum;
P-5, M ale; /.dorsal v iew ;
urosome,
dorsal view ;
right A-1, segmenis 18 and 19-21
enlarged ; /, P-5 ; /', terminal portion of left P -5 enlarg«d.
Calanopia anstralica Bayly and Greenwood ; k, female
urosome, dorsa] vitvv.
length r a tio r a n g e 2-56-2-68 : 1 ; cephalosom e
distinct fro m T -1 a n d w ith c o n s p ic u o u s laternl
hooks ; r o s tr u m d e e p ly forked, e a c h fo r k w ith
a distal i n n e r b a r b ; T -IV a n d T - V fused,
latter p ro d u c e d p o sterio rly in to a sy m m etrica l
points, r ig h t t i p reaching m id d le o f genital
s e g m e n t; tw o -s e g m e n te d u ro so m e w i t h caudal
ram i s h o w in g
th e ratio 5 0 : 2 9 : 2 1 = 100;
tJenital s e g m e n t |asy m m etrica l w i t h a hem i­
spherical s w e llin g on rig h t l a t e r a l m a rg in of
segm ent a t a b o u t p o sterio r t h r e e - f o u r t h o{ its
length ; g e n ita l seg m en t e n la rg e s v e n tra lly up
to about its p o s te rio r m arg in , t h e condition
being q u ite d ifT eren t fro m t h e p ro tu b e ra n c e
found in C, th o m p s o n i A . Scott^ ; U - I I longer
th an b ro a d ; c a u d a l ram i a s y m m e tric a l, right
one slig h tly b r o a d e r than long a n d e a c h ram us
w ith five m a j o r set® and o n e m in u te s e t a ;
A-1 w ith 19 se g m e n ts , w h en a d p r c s s e d to thebody re a c h e s m id d le of g e n ita l s e g m e n t ; Mx.,
jind M xp ty p i c a l o f the genus ; P _ 5 sy m m etri­
cal w ith tw o -s e g m e n te d basipods ; B 2 1 '3 times
as long as w i d e a n d w ith a se ta ; e x o p o d s tw osegm entcd, a s lo n g as th e c o m b in e d lengths
of Di and B-. ; R e - 1 3-2 tim es a s lo n g as wide,
produced a t o u t e r d ista l c o rn e r i n t o su b -e q u a l
sp in e-lik e p ro c e s s e s w ith s e r r a t e d m argin ;
distal p ro c e ss c lo s e ly a d p re sse d t o R e -2 and
f
Current
5 c te n « tf
e x te n d in g
to about
h a lf
Its length
(In
C. th o m p s o n i distal p ro c e s s o f R e-1 19 d ire c te d
o u tw a r d s as th e p ro x im a l process of R e - l ) j
R e -2 w ith tw o sm all o u t e r m a rg in a l sp in es, a
s to u t te rm in a l prong w i t h fin e lateral m arg in a J
s e r r a t i o n s and w ith o n e m in u te spine a t i n n e r
d i s t a l c o m e r.
M a le (F ig . J, j - j ).— L e n g t h range 2-48 t o
2-52 m m . ; p ro so ro e-u ro so m e le n g th ra tio r a n g e
2 -3 7 -2 -4 4 : 1 ; p rosom e
re se m b le s th a t
of
f e m a l e ; five-segm ented u ro s o m e with c a u d a l
r a m i sh o w in g the ra tio 17 : 22 ; 17 : 11 : 9 : 24 —
100 ; s e c o n d urosom al s e g m e n t longest and p r o ­
v id e d w ith tw o h a ir- lik e setae on right v e n tro ­
l a t e r a l m a r g i n ; a n a l s e g m e n t s/hort; c a u d a l
ra m i sy m m etrical, le n g th 2 -5 tim es as long a s
b ro a d ; r i g h t A-1 w ith s e g m e n ts 13-16 enlarged,
a n d im p e rfe c tly f u s e d ; s e g m e n t 18 w ith fin e
v illifo r m
m arg in al t e e t h ; fu sio n se g m e n ts
19-21 w i t h in n er m a r g in a l v illifo rm te e th o n
p r o x im a l p a r t ; P -5 a s y m m e tric a l w ith t h r e e s e g m e n te d rig h t l e g ; t e r m i n a l portion of t h e
le g i s m o v a b ly a tta c h e d to Bg and consLsts o f
a s w o lle n basal p o rtio n w ith tw o sm o o th ly
c u r v e d p ro tu b e ra n c e s a lo n g in n e r edge, p ro x im a l
o n e w ith a short se ta a t its in n e r b a s e ; d is ta l
p o r tio n
sh a rp ly r e c u rv c d
o u tw ard s s w o lle n
m e d ia lly a n d tapering to p o in te d tip ; tw o s u b e q u a l setae are inserted n e a r o u te r proxim al c d g ^
o f c u r v e a n d one seta a t th e in n e r ju n ctio n o f
b a s a l a n d distal p o rtio n s ;
longest, 3-3 tim e s
a s lo n g a s w ide a n d w ith a s e ta ; left P -5 f o u r s e g m e n te d w ith to tal le n g th e q u a l to co m b in ed
le n g th s o f B i and B j o f r i g h t le g ; Re-1 tw ic e
l e n g t h o f R e-2 and w ith a s p in e at o uter d is ta l
c o r n e r ; R e -2 pro v id ed w i t h a spine a lo n g
m id d le o f o uter m a rg in a n d th re e s u b -e q u a l
s p in e s d is ta lly —th e te r m i n a l one directed i n ­
w a r d s a n d serrated l a t e r a l ly th e second a n d
t h i r d s p in e s directed d is ta d , fo rm e r bro ad a n d
s to u t e n d in g in a c o n ic a l p ro n g , la tte r v 'i t h
b l u n t tip and m a rg in a l s e r r a tio n s ; a ro w o f
fin e h a i r s p resen t alo n g i n n e r m argin of R e.2>
T h e n e w species is n a m e d after th e l a t e
D r. R . B . Seym our S e w e ll in honour of h is
p io n e e r in g w orks on t h e C opepoda of t h i s
re g io n .
R e m a r k s — Sew ell- n o te d t h e differences d e a l t
w ith a b o v e for th e h e w s p e c ic s but he d e s ig ­
n a t e d th e specim ens u n d e r C. thom psoni. O n iy
t h r e e sp e c ie s of C a la n o p ia h a v e to d ate b e e n
d e s c rib e d w ith cephalic h o o k s, viz., C. th & m p so n t, C. sew elli^ and C . atistralica.^ C. 6 e p m oicri w ill be the f o u r th sp ec ie s to be d e ­
s c r ib e d u n d e r this g ro u p a n d in th e c h a ra c te ris tic
m o d iS c a tio n of th e g e n ita l s e g m e n t a n 4 In
Letters to the E ditor
?Jo. 13
J u ly 5.1969 ]
n a tu re o f t h e f i f t h le g it d iffe rs f r o m t h e o th er
know n sp ec ie s.
Specim ens o f C . a u sfra tic a w e r e a l s o o b tained
from p la n k to n to w s off C o m c rta a n d N a n co w rie
Islands, th u s e x te n d in g th e d i s t r i b u ti o n of this
re cen tly d e s c r ib e d A u stra lia n s p e c ie s (from
M oreton B a y , Q u e e n sla n d ) to t h e A n d a m a n
Sea.
I w ish to r e c o r d m y g r a te f u l th a n k s to
D r. S. J o n e s , D ire c to r, l o r t h e c n c o u ra g in ^
g u id a n c e ; to D r . E . G. S ila s f o r c r itic a l sug­
gestions a n d t o C .S .I.R . fo r t h e a w a r d of a
Fellow ship.
M ')
a f e w chrom ophobes.
T h e p a r s in te rm e d ia is
c o m p r is e d c f p r e d o m in a n tly acidophils h a v in fj
l a r g e n u c le i and fin e ly g ra n u la te d c y to p la s m ,
fe w c y a n o p h il a n d c h r o m o p h o b e cells.
C en tral M a r in e .
F . P a r a m e s w a r a n P i l l a i .J
F isheries R e s . In s t.,
JVIandapam C a m p , F e b m a r y J2, 1969.
* P ublU lied
vvilh lu e perm ission
C .M .F .R . I n s i i t u t e , M an d ap am Camj,'.
of
th e
D irector,
{ Present address i C.M.F.U. Sub-Station, T. D.
Road, Ernakulam, Cochin-11.
1. Scott. A ., Siioga Exped., 1909, 29 A, 1T».
2. Sewell, R. 13. S..
h.dicn Mus., 19S2, 10, S42.
3. Jonea, E . C . and Park, '1. S., Cruitateaua, 1967,
12 (3), 243.
4. Bayly, I. A . 1l. and Greenwood, J. G .. Proc. Roy.
Se<. Qittettslettd, 10C6, 77 (1 ), 100.
O N T H E F U N C T IO N A L
ID E N T IF IC A T IO N O F T H E
A D E N O H Y P O P H Y S E A L C Y A N O P H IL
C E L L S I N T H E G IA N T G O U R A M I,
C O L IS A F A S C IA T A (B L O C H
A N D S C H N E ID E R ;
T he c y a n o p h il c e lls of p r o x im a l p a r s dista lis reg io n o f t h e teleo stean h y p o p h y s is have
been d if f e r e n tia te d fu n c tio n a lly i n t o tw o ceil
ty p e s : G o n a d o tr o p h s a n d T h y r o tr o p h s , by
m eans of e x p e r i m e n t a l tr e a tm e n t a n d ap p lica­
tion o f s p e c ific s ta in in g m e th o d s .’- '
E xcept
fo r a v e ry b r i e f d e sc rip tio n of t h e m orpholog.v
o f th e p i t u it a r y o f th e g ian t g o u ra m i." n o w ork
on th e h is to p h y s io lo g y of its p i t u i t a r y ap p ears
to have b e e n d o n e . A s h o rt d e s c r i p ti o n o f the
p itu itary o f C o lis a /ascia fa is g iv e n h e re
.
explain th e l o c a ti o n of th e c y a n o p h ils in its
proxim al p a r s d i s t a l is region, T h e p itu ita r y is
closely a p p lie d t o th e b ra in a n d is histologi­
cally d is tin g u is h a b le into th e n e u ro h y p o p h y s is
an d th e a d e n o h y p o p h y s is . T he l a t t e r is divided
in to th re e l o b e s ; ro s tra l a n d p r o x i m a l pars
distalis, a n d p a r s in term ed ia a r r a n g e d one
behind th e o t h e r fr o m fro n t to r e a r (F ig , 1).
T h e ro s tra l p a r s d ista lis is p r i m a r i l y acido­
philic a n d c h r o m o p h o b ic w ith f e w cyanophil
cells.
T h e p r o x i m a l p a rs d i s t a l is contnin-?
b rig h tly s t a i n i n g ac id o p h ils a n d c y a n o p h ils , and
F ig . I . Pituitary of Colisa fc'cima. Bouln’s fluid,
C A IIP , X €0. N = neuroliypophysis, Pi » pars inter­
media, P F D = proximal pars distalis, RPD = rostral
pars di&talls. Arrows show the position of cyanophils.
O f a ll th e p itu ita r y c o m p o n e n ts in C o lisn ,
t h e c y a n o p h ils o f t h e p r o x im a l pars d is ta lis
e x h i b i t p ro fo u n d c o r r e la tiv e seasonal c h a n g e s
a s s o c ia te d w ith th e r e p r o d u c t i v e state o f th o
fish .
T h e cy an o p h ils ( T y p e 1) w h ich l i e
i n t e r s p e r s e d w ith a c id o p h ils in the dorsal z o n e
o f t h e p ro x im a l p a rs d i s t a l is are v a r io u s ly
sh ap ed
w ith
ro u n d
n u c le u s ,
co n sp icu o u s
n u c le o lu s a n d sp a rse c h r o m a t in m aterial. T h e s e
c e lls m a k e th e ir first a p p e a r a n c e in th e p r e ­
s p a w n i n g phase o f t h e fish and w ith t h e
a d v a n c e m e n t of th e m a tu r a tio n of jio n a d s ,
t h e y s h o w sign o f a c tiv i t y .
They a re fille d
w i t h d a r k l y stain ed c o a r s c se c re to ry g ra n u le s ,
a n d in c r e a s e in size a n d n u m b e r, D u rin g the:
s p a w n in g phase th e y a r e so lid ly packed w i t h
e x t r e m e d en se g ra n u le s a n d in some o f th -:
c e lls t h e s c c rtlo ry g r a n u l e s ap p ear to h a v e
p a s s e d o u t in to th e n e u ro h y p o p h y s e a l b ra n c h e s
s u r r o u n d i n g the p ro x im a l p a r s distalis. T h e s e
c e lls a r e b rilJian tly c o lo u r e d w ith A ld e h y d e
f u c h s in
(A F ) , P e rio d ic a c id -S c h ifls ( P A S )
and
C h ro m e -A lu m -H c m a to x y lin - P h I o x i .i «'
( C A H P ) stain.s. sh o w in g ( h e ir Riycoprotcin o r
m u c o p r o te in n a tu re .
T hey
undergo n c tiv o
d c g r a n u la tio n and v .ic u o liz iitio n durinj* t h o
s p a w n in g phase a n d lo s e t h e i r cimti-iils d iirin -;
th e p o st-sp a w n in R p h a s e o f th o fish, .^ n o th o r
ty p e o f C yanophils ( T y p e 2 ) Jin- lociitod i»)
th e v e n t r a l portion o f Ih o p roxim al par.s tlis t a h s o f t h e jiinnt jjo in iu n i. I.vini* utljiiront to
th e b o r d e r o f th e por.s In lo n n iH lia. T h ese c e lls
a r e fu s if o r m , elo n g ate d o r u v a l in ^hape a n d