Occasional Papers of the Museum of Zoology 45 



large, circular, its hind edge about midway in head. Preor- 

 bital narrow, about equals 2/5 of orbit or a little less than 

 horizontal diameter of pupil. Mouth steeply inclined, curved 

 slightly in gape, and lower jaw projecting a little. jNIaxillary 

 reaches about opposite hind nostril, and its terminal expanded 

 end about 2/5 of orbit. Lips rather thick and fleshy. Teeth 

 tine, sharp pointed, in bands, outer series slightly enlarged, 

 especially in front of upper jaw. Patch of line teeth on vo- 

 mer. No teeth on palatines or tongue. Tongue rather thick, 

 somewhat pointed and free. Each ramus of mandible well 

 elevated inside mouth. Nostrils separated, front one about 

 midway in snout, hind one little larger and close to upper 

 front orbital rim. Interorbital space broad, trifle wider than 

 eye, more or less flattened. Suprascapula and edge of pre- 

 opercle entire. Opercular flap large, about 3/4 of eye-di- 

 ameter, and osseous portion not differentiated from cutaneous. 



Gill-opening extends forward about opposite front edge of 

 orbit. Rakers i, i -|- 6, iv, small tubercle-like rudiments, as- 

 perous, and longest about 2/5 of longest filaments, which 

 about equal terminal expansion of maxillary. Isthmus con- 

 stricted. Pharyngeal teeth fine, pointed, of usual type in 

 genus. 



Scales large, broadly exposed, finely ciliated, though those 

 of head more or less entire. Cheek with 5 rows of scales, 

 similar to occipital scales, and both smaller than opercular. 

 Head otherwise naked and more or less porous. Scales on 

 chest small, also those along bases of vertical fins. Along 

 spinous dorsal and anal bases they form low scaly sheaths, 

 though on soft portions of these fins they extend further out 

 with those betw^een rays becoming much smaller. Lateral line 

 of simple tubes, more or less concurrent with upper profile, 



