m i l ,
a
F I S H E S .
Tlie a n te r io r ap p e n d a g e s o f th e v e n tra l fins a re f la tte n e d a n d o h io n g ; th e y a re fu rn ish ed w ith two
sh a rp s h o r t sp in e s on th e i r in n e r m a rg in .
T h e p o s te rio r a p p e n d a g e s a r e s l io r ta n d ro b u s t a s c om p a re d witl. th o s e o f th e Chim. momtrosa
L a c h IS su p p o r te d on its p ro p e r p e d ic le , w h ic h is jo in te d a t a b o u t o n e -e ig h th o f its len g th from its
o r ig i i , ; a t a b o u t o n e - th ird o f its le n g th , i t d ivide s iu to two h ran eh e s o f e q u a l leu g th a u d thickne.ss ■
h e se a re e a c h su p p o r te d h y c a r tila g e w h ic h e x te n d s on th e e x te rn a l s id e fo r more th a n h a lf th e ir
le n g th 1 b eyond th is e x te rn a l c a r tila g e th e y a re c o v e re d hy th i c k p la ite d folds o f s k in , th ic k ly b e s e t by
p n o k le s , d n e o te d tow a rd s th e a b d om e n , a n d e x te n d in g d ow nw a rd s b e tw e e n tb e h r a n e h e s , n e a rly to
th e p o in t o f th e ,r u n io u . A t th is p o in t t h e , a r e m ove able , b e in g c a p a b le o f s e p a r a tio n from e a ch
o th e r, th o u g h n o t to a n y g r e a t e x te n t . T h e firm c e n tr a l c y lin d e r o f e a c h o f th e s e d iv is io n s a dm its a
b ris tle throiigli a c a n a l th a t p r e s e n ts i ts orifice a t th e e x tr em ity .
T h e te e th in Ihe u p p e r j a w co n s is t o f a c u ttin g ed g e , hollowed o u t in fro n t, a n d a p p a r e n tly
com p o s e d o f abon te n f ia tte n e d te e th u n ite d a t th e ir s id e s : th o s e o f th e low e r j a w e x te n d fa rth e r
a lo n g th e sides o f Ihe m o n th , a re e lev a ted in fro n t, a .e n n o tc h e d o u t, a n d a fte rw a rd s ris e in to a sh a rp
tn a n g n l a r e lev a tio n o n e a c h s id e . T h e g r e a te r p a r t o f th e ro o f o f th e m o n th i s o c cu p ied bv tw o la rg e ,
v e ry ro u g h , b o n y proc e sse s. h . S >
n ta tk s b e tw e e n th e CMm. Colliei a n d th e will he
r e a d .ly s e iz e d by c om p a rin g th e specific p h r a s e g iv e n ab o v e fo r th e form e r sp e c ie s , a n d th e su b jo in e d
r c n r e s e n t , ' ‘‘' l ' “ ^ len fie r rem a in in g a lo n e a s th e
r e p r e s e n ta tiv e o f th e g en u s C h tm a ra a s lim ite d by M . C u v ie r.
C n iM i E R A M O N S T R O S A . L .
CMm. p i„ ,id o „ a li„M ,a ,d secrulo,. opp,oM„o,i, „coodi eogoali, t . d i i couddm „ p „ o i .p ,„ „ i .m loooUodi,,.
b a s e ’ ' t o e b a s e , th e sTtr ariig.h7t “eHd g°e'' o f th o se co n d d o rs a l fin",■ w'* hich is o f th e sam e h e ig h t th ro u v h o u t ■ a nadt tthh ee
w h c h th u s le f t n a k e d o n its u p p e r su rfa c e fo r a c o n s id e r a b le s p a c e ; a ll th e se m a rk s s trongly
i Z Z o T d i ; " " ’’r '™ “ " “ 'a a ' ia a 'P a r a to d from
th e s e c o n d b y a n in te rv a l e q u a l to th e b r e a d th o f th e fo rm e r ; th e u p p e r e d g e o f th e se co n d d o rs a l fii,
« h i b i t s a d e e p a n d b ro a d c u rv e d ow nw a rd , ; a n d th e th ird do rsa l fin is c o n tin u e d n e a r ly to th e en d o f
th e ta i l . To th e s e m a rk s a re a d d e d th e c om m e n c em e n t o f th e a n a l tin iu th e C/iim. monslrosa a t a
pm n t a n te r io r to th a t op p o sed to th e o rig in o f tlie th ird d o r s a l ; w h ile in th e a im . Colliei i t o r ig in a te s
o f r r / f T ’ V ' , ’“ i"® 'a 'e < i- T h e fo llow in g c om p a ra tiv e m e a su rem e n ts o f th e spc°cime„
01 a ,m C olhe, b ro u g h t h ome by C a p t. Be e ch ey , a n d o f a sp e c im e n o f Chim. mono,rood p re s e rv e d in the
B ritish M u s e um , will fu r th e r illu s tr a te th e dilfe ren o e s e x is tin g b e tw e en th e sp e c ie s ;—
CHIM. MONSTEOSA. CHIM. C O L lIE t .
T » '» l l e n g th ............................................................................................................................... b i r t a .
T o th e b a s e o f tb e f ir s t d o rs a l fin.................................................................... 41 ...............
L e n g th o f its s p in e ................................................................. .................... 3 ........................................................... ^
L e n g th o f th e first d o r s a l.................................................................................... 2^ .............................................. 2
F rom th e e n d o f th e firs t d o r s a l to th e e n d o f th e s e c o n d lU
L e n g th o f th e th ird d o rs a l ............................................................................... 3i . . . ' .
F rom th e end, o f th e th i r d d o rs a l to th e tip o f th e t a il . 3^ * .......................................... q
C om m e n c em e n t e f t h e a n a i fin i n ad v a n c e o f th e th ird d o 'r» i.'.V ,! 1 B e h in d t iiV 'thW d Y a l ' ' o i
L e n g th o f th e p e c to ra l f in ............................................................................... - ^
.......................................... V.V.V.’.V .V ^ '’ ’ ' ‘.V.‘ ! . 3^ 2^
p o s te rio r a p p e n d a g e s to th e v e n t r a l f in ............... 4 3 ’’
a n te r io r a p p e n d a g e s .................................................. j ' . ........
F IS H E S .
III ad d itio n to th e d iffe ren c e s e x is tin g b e tw e e n th e sp e c ie s in th e form a n d p o sitio n o f th e fins,
o th e r s a rc fu rn ish ed by th e a p p e n d a g e s to th e v e n tr a ls , w h ich a re m e t w ith in th e m a le s a lo n e . T he se
ap p e n d a g e s h ave b e en d e s c rib e d above a s to th c i r e x te rn a l fo rm in th e C/tim. Colliei. T h o s e o f th e Chim.
wjon#f? oia ( P l a t e 23. F ig . 3 ) d iffe r rem a rk a b ly in form a n d p ro p o rtio n . T h e a n te r io r a p p e n d a g e s a rc
o v a l, .somewhat c lu b -sh a p c d , a n d fla tte n e d , a n d h a v e on th e ir in n e r m a rg in a row o f a b o u t s ix o r e ig h t
sh a rp sh o rt sp in e s , th e p o in ts o f w hich a re d ir e c te d tow a rd s th e b a s e o f th e a p p e n d a g e . T h e p o s te rio r
ap p e n d a g e s a re s le n d e r e r a n d m u ch lo n g e r th a n in th e Chim. Colliei: e a ch is su p p o r te d o n a p ed ic le ,
o n e -e ig h th o f its to ta l len g th ; a n d d iv id e s a t a b o u t o n e - th ird o f its le n g th in to th re e p a rts , a ll o f e q u a l
len g th ; th e o u te r o f th e s e d iv isions is e x te rn a lly c a r tila g in o a s , a n d is c o v e red a lo n g i t s in n e r s id e a n d
ro u n d its tip w ith a p la ite d sk in w h ich is th ic k ly a n d s tro n g ly sp inous ; th e p o s te rio r d ivision re s em b le s
th e p re c e d in g , a n d is .su p p o rted by a n e x te rn a l c a r tila g e e x te n d in g a b o u t h a lf-w a y u p its h in d e r s id e ;
i t i.s g rooved a lo n g th e whole len g th o f its in n e r sid e , o r th a t s id e w h ich is d ir e c te d tow a rd s th e m e d ia n
lin e o f th e b e lly o f th e fish, to re c e iv e th e th ird div isio n , which co n s is ts o f a s le n d e r c a r tila g e w ith o u t any
co v e rin g o f sp in o u s s k in . T h e d iv is io n o f th is a p p e n d a g e in to th r e e p a r ts is m e n tio n e d by M. C u v ie r
am o n g th e c h a r a c te r s o f th e g e n u s Ck im a ra , L .; b u t from th e d e s c rip tio n a b o v e g iv e n o f th is p a r t in
th e Chim. Colliei, i t w ill b e e v id e n t th a t th e t r ifu r c a tio n d oe s n o t e x te n d to th e wh o le g e n u s .
I n th e c om p a ra tiv e ly b a c kw a rd p o sitio n o f th e c om m e n c em e n t o f th e se c o n d d o rs a l fin, a n a p p ro a c h
is m ade to th e fo rm o f th e g en u s Callorhynchus, Cuv.; b u t i t wo u ld s till r e q u ir e m an y o th e r lin k s be fore
i t wo u ld be sa fe to b len d to g e th e r ag a in th is g ro u p a n d Chimtera.
F rom M r . C o llie ’s n o te s wc le a rn , th a t
“ T h e in te s tin a l c a n a l is a wid e s a c , w ith o u t e x te rn a l m a rk o f d iv isio n from th e oesophagus to
th e anus.
“ T b e live r is la rg e , a n d o f a c la y colour.
“ T h e sp le e n is p u rp lish .
“ T h e t e i t i s a rc ve ry la rg e , n e a r ly h a lf th e size o f th e s am e p a r ts in m an ; th ey lie b e h in d th e h e a r t,
a u d a re e a ch furn ish ed w ith an ep id id ym n s p la c e d ab o v e a n d b e h in d th em ; h en c e d e s c e n d th e vasa deferentia
p a s s in g ove r? tw o c y lin d ric a l b o d ie s (veiicuZ« seminale sl), a n d g o in g o n e a ch s id e o f th e v e n t.”—C.
A sk e tc h o f th e la tte r p a r ts w as m a d e b y M r. Collie , a n d th e y a r e p re s e rv e d in th e o n ly sp e c im en
o f th e fish b ro u g lit h om e b y th e e x p e d itio n . I t is d e p o s ite d in th e M u s e um o f th e R o y a l C ollege o f
S u rg e o n s , L o n d o n , a n d from i t w e re ta k e n , w ith th e p e rm issio n o f th e B o a rd o f C u r a to r s , th e d raw in g s
w h e n c e o u r e n g ra v in g w a s m ad e . T h e figure o f th e m a le ap p e n d a g e s o f th e Chim. monstrosa w a s
o b ta in e d from a spe c imen in tb e B ritish M u s e um .
A t a la te r p e rio d o f th e v o yage , wh en in th e B a y o f C oquimbo on th e co a st o f C h ili, M r. Collie
wa s e n a b le d to p ro s e c u te s till f a r th e r his a n a tom ic a l e x am in a tio n o f th e o rg a n s o f g e n e r a tio n in tb e
gen u s C k im a ra , L. I t is im p o ssib le to d e te rm in e , in th e a b s e n c e o f a sp e c im en o r o f suffic ient no te s,
th e sp e c ie s o n which he o p e ra te d , a n d wh ich h e te rm s Chiniara callorhynchus? “ I t s len g th was tw e n ty
in c h e s ; th a t o f th e sn o u t two inche s ; its ta i l w a s ta p e r in g a n d filam entous, a n d its g e n e r a l c o lo u r
a silvery grey . T h e m a le p osse ssed th e s tip ita te m ove able k n o b on th e u p p e r a n d an te rio r p a r t o f th e
h e a d , s e t w ith sm a ll te e tli o r sp in e s on its u n d e r su rfa c e , an d re c e iv e d in to o r ra is ed o u t o f a c av ity on
th e h e a d , b u t n o t in flu e n c e d by tiie mo v em en ts o f th e low e r jaw% a s was th e c a s e w ith th e o n e seen
a t M o n te rey .
” T h e liv e r is d a rk -c o lo u re d ; th e g a ll-b la d d e r p a le , a n d th e pancreas s im ila r ly c o lo u re d . T h e spleen
is d a rk p u rp lish , a n d in v e sts th e ex trem ity o f th e pancreas. T h e p a n c r e a tic a n d b ilia ry d u c ts op en
s e p a r a te ly in to w h a t a p p e a rs to b e th e b e g in n in g o f th e s tom a c h , b u t th e re is o nly o ne g r a d u a l c o n tra c tio n
o f th e in te s tin a l c a n a l from th e (esophagus to th e anus, a n d th e tu b e is c o n tin u e d in a d i r e c t lin e from
th e m o u th to th e v en t. P o r tio n s o f sh e lls, a n d o th e r g r itty su b s ta n c e s , w e re c o n ta in e d b e tw e en th e
som ew h a t ob liq u e ly lo n g itu d in a l folds on th e in s id e o f th e in te s tin a l cavity.
“ T h e re is a n am p le c avity a ro u n d th e anus, a n d the rectum, a s i t m ay be c a lle d , re a d ily p ro tru d e s .
I n th e p o s te rio r p a r t o f th is c av ity th e re is a sm o o th r a is e d b o d y {clitctris?).