6 2
C H jE TO D O N v i n c t u s .
Chest, fia v u s ; fa s c ia oculari brunned, n
pectoralctn a n iic i cingentibus, ceerulescentihis
3 ad la tta nigra , caruleo ma rginatis; tittis duabus ohiiquis, p in ium
PLATE XVII. FIG. 1.
Hab. ia Oceaoo Pacifico, apud Byam Mattin Island.
O f th e p r e s e n t sp e c ie s , o b ta in e d in th e s am e lo c a lity as th e tw o p r e c e d in g , o a r only k n ow le d g e
is d e riv e d from M r. Sm y th ’s d raw in g . T h e m a rk in g s o f th e lish , a s th e r e re p re s e n te d , a r e such a s to
le a v e n o d o u b t o f its c o n s titu tin g a n ew sp e c ie s , b e a r in g some r e la tio n to th e Ch a t, unimaculatus,
B lo ch , b u t d iffe rin g from th e re p r e s e n ta tio n g iv e n in h is Ic h th y o lo g y ( p i. 201, f. 1 ), b y its m u c h
sm a lle r c om p a ra tiv e d e p th ; its b rig h t y e llow c o lo u r ; th e w h ite te rm in a tio n o f its ev en c a u d a l fin ;
th e ab s en c e o f a d a rk m a rg in to tlie so ft p a r ts o f th e d o rs a l a n d a n a l fins ; th e p a le b lu e b o rd e rs to th e
fa s c ia th a t c ro sse s th e e y e ; th e b lu e i r i s su rro u n d in g th e la rg e b la c k p u p il o n th e s id e ; a n d la s tly , b y
th e ve ry p e c u lia r m a rk in g c o n n e c ted w ith th e p e c to ra l f n , a n d low e r p a r t o f th e sid e s. T h is co n sists
o f tw o b lu e v itta , c om m e n c in g a p p a r e n tly j u s t a b o v e th e a n g le o f th e ope rculum: th e u p p e r p a s s e s
b a c kw a rd s , in a n o b liq u e c u rv e , ab o v e th e b a s e o f th e p e c to ra l fm, a n d te rm in a te s a t th e b a se o f th e
a n a l fin, a t a b o u t th e m id d le o f i t s soft p a r t ; th e low e r, fo rm in g a t first a rig h t an g le w ith th e comm
e n c em e n t o f th e u p p e r , d e s c e n d s d ire c tly d ow nw a rd s to th e b a s e o f th e p e c to r a l fin, ro u n d wh icb
i t pa sse s o n th e u n d e r side, a n d th e n p ro c e e d s o b liq u e ly , a n d p a r a lle l w ith th e u p p e r v itta , to th e ba se
o f th e sp in o u s p o rtio n o f th e a n a l fin.
T h e m a rk in g ju s t de sc rib ed h a s su g g e s ted th e id e a o f a lig a tu r e s u r ro u n d in g a n d re s tra in in g th e
a n te r io r limbs, w h ich is a llu d e d to in th e tr iv ia l n am e which w e h a v e g iv e n to th e sp e c ie s . >
T h e fig u re , lik e th a t o f th e o th e r sp e c ie s r e p re s e n te d in th e sam e p la te , is s ta te d to b e tw o -th ird s
o f th e n a tu r a l siz e .
H e n i o c h u s c h r y s o s t o m u s .
Hen. ceBTulescenti-albidus, fasciis tribvs laiis saturate fuscis, primd posi-oculari, secundd medid, tertid basin posticavi
pinna dorsalis ineludente ; orefulvo.
PLATE XVIII. FIG. 1.
Chsetodon chrysostomus. >SoZ. M S S .
“ Pe-ue, vel Peuwe.” Tatehi.
“ Tatahe. Peooe.” Sol. MS S .
Hab. apud Tahiti.
T h is fish is k n ow n to u s , a s c o n n e c te d w ith th e e x p e d itio n , on ly b y a d r aw in g m a d e by
M r. B e e c h e y ; a d r aw in g w h ic h w e c om m u n ic a te d to M . C u v ie r, w ith th e m a n u s c rip t n am e of
H en . p e rm u ta tu s. O n c o n su ltin g , h ow ev e r, th e co lle c tio n o f figures p r e s e rv e d b y S ir Jo s e p h B an k s ,
w e find o ne o f th is sp e c ie s , fully c o n firm in g , a s to g e n e r a l effe c t, th e d r aw in g be fore u s . I n
D r . S o la n d e r ’s M S S . th e n am e o f Chatodon chrysostomus is a s s ig n e d to i t ; a n d i t is th u s d e s c r ib e d :
“ P is c is rh om b e u s a lb u s fasciis tr ib u s la tis (ta rn latae s u n t u t d im id ium co rp o ris te g iin t) , ob liq iiis
n ig r ie a n t ib u s ; p r im a p e r o c c ip u t, p o n e o cu lo s, p e r b a s in p in n a rum p e c to ra lium , a d p e c tu s d u c t a ;
s e c u n d a , caeteris la tio r , p a u lo p o n e m ed ium p i s c i s ; te r t i a , in p a rte p o s tick dorsi s e cu n d um b a s in
p o s te rio rem pin n se dorsa lis.
“ O i fulvum .
“ I r i s a rg e n te o -fla v ic a n s . P u p illa n ig ra .
“ I n P in n a dorsali fa sc ia m e d ia an tic ^ e x te n d i tu r ; p a rs p o s tic a lu te s c e n s .
“ P in n a pectorales lu te s c e n te s .
" P i n n a ventrales n ige rrim a e .
“ I n pinnd a ni fa sc ia m e d ia e x te n d itu r u t i lia ta n tum m o d o anticfe e t posticfe a lb id a
" P in n a caudalis lu te s c e n s .
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