PlMELEPTERDS. % FISHES. 487 



S. alepidotus, (Chcetodon alepidotus, Gmel.) Body bluish above, 

 whitish beneath ; tail bifid. American seas. Shaw, iv. 370. 



Gen. 155. PIMELEPTERUS, Lacep. 



Body oval, compressed ; teeth equal, edged obtuse, and crowded; 

 soft part of the vertical fins thickly covered with scales ; bran- 

 chial membrane scaly, with four rays. 



P. Boscii, Lacep. Head small ; lips extensible ; scales broad, round, 

 and silvery. 6 inches long. American seas. Lacep, iv. pi. 9, fig. 1 



Gen. 156. KYPHOSUS, Lacep. 



Back elevated ; a prominence on the neck before the dorsal fin, 

 and another between the eyes ; operculi scaly ; pectoral fins 

 elongated and pointed ; tail forked. 



. This genus is founded upon a species from the South Sea, observed and figured by 

 Commerson. 



Gen. 157. PLECTORHYNCHUS, Lacep. 



Body ovate, compressed ; preoperculi dentated ; a row of mi- 

 nute teeth scarcely piercing the jaws ; ventral fins broad, with 

 numerous rays. 



P. chcetodonoides, Lacep. Indian seas. Block, pi. 198, fig. 1. 



Gen. 158. GLYPHISODON, Lacep. Chcetodon^ Bloch. 

 Body and tail much compressed ; head scaly ; teeth edged, and 

 in a single row, often notched ; lateral line terminating oppo- 

 site the dorsal fin. 



G. maculalus, Cuv. Body yellow, with a longitudinal row of five 

 or six large round brown spots, and crossed with bands of paler 

 brown ; fins yellow. Inhabits fresh waters in India and S. Ame- 

 rica. Block, pi. 427. 



Gen. 159. POMACENTRUS, Lacep. 

 Preoperculi dentated ; otherwise the same as the preceding. 



P. pavo, Lacep. Body dull orange, with numerous brown lines and 

 undulations ; head spotted and streaked with blue ; tail forked. 

 Inhabits Indian seas. Bloch, pi. 198, fig. 1. 



P. aruanus, Cuv. (Chcetodon, Bloch.) Body ovate, whitish, shading 

 to brown above, with three transverse black bands ; suborbitars 

 dentated. Inhabits Indian seas. Bloch, pi. 198, fig. 2. 



Gen. 160. AMPHIPRIO^, Cuv. 



Body oval, compressed ; teeth edged, and in a single row ; late- 

 ral line terminating at the dorsal fin ; suborbitars and the 

 four pieces of the operculi dentated. 



A. epkippiwn, Cuv. (Lutianus, Bloch.) Head short, much sloped 

 and compressed ; mouth small and oblique ; body compressed, 

 reddish, the back black, extending on the sides into a large black 

 spot. Inhabits Indian seas. Bloch, pi. 250. 



