484 PISHES. ACANTHOPTERYGII. 



Gen. 142. CHETODIPTERUS, Lacep. 



Teeth small, flexible ; body and tail compressed, as deep as long; 

 snout projecting ; separation of the dorsal fin so deep as to 

 make two dorsal fins. 



C. Plumieri, Lacep. Body greenish, mixed with yellow, with six 

 transverse narrow bands of a deeper green ; tail lunated. Inha- 

 bits fresh waters of India Block, pi. 211, fig. 1. 



Gen. 143. HOLOCANTHUS, Lacep Chcetodon, Bloch, Lin. 

 Body compressed, oval ; teeth minute ; preoperculum den- 

 tated or smooth, with a strong spine towards the base ; ver- 

 tical fins not much elevated at their commencement ; soft 

 rays of the dorsal and anal fins elongated and falciform. 

 * Dorsal and anal Jins falciform. 



H. aureus, Cuv. Body bright golden yellow, shaded with orange 

 on the upper parts ; dorsal and anal fins falciform ; extremities of 

 thefins green. 12incheslong. Americanseas Bloch,-p\.193,fig.l. 



H. paru, Cuv. Body black, silvery on the sides ; scales with a 

 yellow border ; pectoral and caudal fins short and rounded ; dorsal 

 and anal fins extended, falciform ;12 spines in the dorsal fin. 

 12 inches long. Inhabits S. American seas. Bloch, pi. 197- 



H. ciliaris, Cuv. Body gray, deeper on the back ; belly white ; fins 

 gray, with a yellow border ; scales ciliated ; dorsal and anal fins 

 extending in a semilunar form. 12 inches long. Inhabits In- 

 dian seas Bloch, pi. 214. 



** Dorsal and anal Jins rounded or angular. 



H. imperator, Cuv. Body golden yellow, with longitudinal bright 

 blue parallel rays ; anal and dorsal fins thick, stiff and rounded ; 

 fourteen spines in the dorsal fin. 12 inches long. Inhabits Ja- 

 panese seas. Bloch, pi. 194. 



H. bicolor, Cuv. Body oblong; head, half of the body, and tail white, 

 the rest reddish brown. Inhabits Indian and American seas. 

 Bloch, pi. 206, fig. 1. 



Gen, 144. ACANTHOPODUS, Lacep. 



Body much compressed, as deep as long ; opening of the mouth 

 small ; teeth short and crowded; dorsal fin covered with small 

 scales ; two short spines in place of the ventral fins. 



Cuvier includes in this group the genus Monodactylus of Lacepede. 

 A. falciformis, Cuv. Body much compressed, silvery, with brown- 

 ish back ; two short spines in place of ventral fins ; dorsal and an- 

 al fins falciform, extending to near the tail, which is lunated. 12 

 inches long. Inhabits Indian seas. Shaw, iv. 392. 



Gen. 145. OSPHRONEMUS, Commers. 



Head and branchial membrane scaly, as well as the bases of the 

 vertical fins ; mouth small, and teeth crowded, but very short; 



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