N0.126C. LABROID FISHES OF JAPAN— JORDAN AXD SNYDER. 641 
posterior canine tooth absent; tin rays, dorsal IX, 12; anal III, 12; 
anterior dorsal spines usually produced and flexible; caudal rounded. 
Polynesia, the species few; deeply colored fishes of the coral reefs. 
The genus Coris^ as understood b}' Giinther, differs from TIallchoeres 
ill its small scales. It comprises a great variety of forms, and is divisi- 
ble into six well-marked genera or subgenera, distinguished as follows: 
". Scales in lateral line 50 to 85. 
//. Posterior canine obsolete; headnakeil; candal rounded; scales 60 (\ms. 
bh. Posterior canine present. 
c. Head with a patch of scales behind the eye; caudal rounded; scales 50. 
Ophthahnoh'pis. 
ec. Head entirely naked. 
d. Caudal rounded or truncate. 
e. Scales 55 to 65 Hemicoris. 
ee. Scales 70 to 85 JuUs. 
(Id. Caudal forked, the lobes much produced in the adult; scales 78. 
P.^'eudocoris. 
aa. Scales in lateral line al)out 120; body oblong; head naked; no posterior canine. 
Hologi/mnosu.^. 
Of these groups we here recognize Coris^ Julis^ Ojohthalmolepis 
{UitroJata)^ and IIoJogymno>ms {fasclatus) as distinct genera. It is not 
unlikely that Pseudocoris {]\eteroi)tera) is entitled to similar rank. 
{Kopvg^ a helmet, from the adipose hump on the forehead in old 
individuals of Coi'is aygida^ ""a cause de I'espece de casque qui 
envelope et surmounte la tete," the lirst dorsal spines being compared 
to the plume in the helmet.) 
". Scales in lateral line 50 to 60; posterior canine obsolete or nearly so. 
h. Anterior dorsal rays much produced; body robust; color blue-black almost 
uniform aygula, 32. 
32. CORIS AYGULA Lacepede. 
Coris mjgula Lacepede, Hist. Nat. Poiss., Ill, 1802, p. 96, pi. iv, fig. 1; lie de 
France. — (jtiNTHEE, Cat. Fish., IV, 1862, p. 201; Eed Sea, India, Australia. — 
Day, Fish. India, 1885, p. 408 (with a figure representing some species of 
Hologymnosui^) . 
Corw angulata Lacepede, Hist. Nat. Poiss., Ill, 1802, p. 96, pi. iv, fig. 2; He de 
France (dorsal spines not produced). 
Jidis gihbifrons Quoy and Gaoiard, Voy. Astrolabe, Poiss., 1834, p. 707, pi. xix, 
fig. 3; He de France. 
Jidis coris Cuvier and Valexciexnes, Hist. Nat. Poiss., XIII, 1839, p. 491; He de 
France. 
Head 3f in length; depth 3; depth of caudal peduncle 6; eye 7 in 
head: snout 2^; interorbital space 3|; D. IX, 12; A. Ill, 12; scales in 
lateral series 61; between lateral line and insertion of dorsal 5; 
between lateral line and insertion of anal 21. 
Body moderatel}^ compressed, caudal peduncle deep, dorsal contour 
ascending rapidly from tip of snout to insertion of dorsal, ventral 
outline more gently and evenly curved, interorbital space convex. 
Proc. N. M. vol. xxiv— 01 11 
