246 



PROCEEDINGS OF THE ACADEMY OF 



[March, 



and greatest depth at origin of dorsal. Caudal peduncle long, com- 

 pressed, and its least depth 2f in its length, measured from base of 

 last anal ray. 



Head elongate, compressetl. and upper profile more or less straight 

 from above nostrils. Snout convex, rather broad, and also with a 

 convex profile. Eye rather large, a little above middle of depth of 

 head, and well anterior in its length. JMouth slightl}^ curved, inclined, 

 and jaws subequal, lower hardly if any projecting. Maxillary reaching 

 about opposite front rim of orbit. Mandible rather broad, and rami 

 ]3ut little elevated, edges of jaws rounded. Tongue rather broad, 

 fleshy, and adnate to floor of mouth. Lijjs thin and narrow. Nostrils 

 adjoining near upper edge of eye, and internasal space much less than 

 interorbital. Anterior nostril circular, and posterior larger, concealed 

 in front b}" flap of anterior. Both interorbital and internasal spaces 

 a little elevated, though flattened medianly. Subopercle of moderate 

 size. 



Gill-opening extending forward below posterior rim of orbit. Rakers 

 small, weak, and very short. Filaments about f of orbit. Pseudo- 

 branchise well developed. Pharyngeal teeth 2, 4-4, 2, compressed, 

 and hooked. Isthmus rather broad. 



Scales cj'cloid, moderately large, and exposed portions but little 

 deeper than broad. Except base of caudal, fins and head naked. 

 Lateral line slightly decurved at first, running rather low and straight 

 to base of caudal. Tubes simple. 



Dorsal inserted about midway between tip of snout and base of 

 caudal, second rudimentary ray rather long closely joined with first 



