530 



PROCEEDINGS OF THE ACADEMY OF 



[Oct. 



rounded. Caudal peduncle well compressed, length about equals 

 its least depth. 



Head moderate, compressed, profiles similar, and flattened sides 

 scarcely constricted below. Snout convex over surface and in 

 profile, length f its width. Eye rounded or slightly ellipsoid, scarcely 

 elevated and its centre falls at first f in head. Pupil moderate, 

 vertically ellipsoid. Eyelids free, not adipose-like. Mouth terminal, 

 broad, with short commissure. Lips moderately fleshy, firm. Max- 

 illary well inclined, free, short, not extending back to front eye edge. 

 Teeth uniserial in jaws, upper more concealed by lips, and each one 



Fig. 7. — Odonlodilbe drepanon Fowler. (Type.) 



crenulated or with five to seven points along edge. Mandibular 

 teeth a little larger. Maxillary with two rather inconspicuous teeth 

 basally. Inner buccal folds moderate. Tongue depressed, rounded 

 and free in front. Mandible shallow, included within upper jaw 

 when closed so that latter slightly projects, and rami not elevated 

 inside mouth. Nostrils large, together, close before eye, anterior 

 simple pore and posterior larger crescent. Interorbital evenl}' 

 convex. Suborbitals well developed, smooth, and large infraorbital 

 completely covers cheek. Hind preopercle edge nearly vertical. 

 Opercle large, deep, with several weak striae, and upper hind edge 

 moderately emarginated. Occipital fontanel extends from hind 



