1913. 



NATURAL SCIENCES OF PHILADELPHIA. 



569 



depth at dorsal origin. Postventral constricted, though not trench- 

 ant, and predorsal with slight median ridge. Other edges of body- 

 convex. Caudal peduncle well compressed, least depth about 

 equals its length. 



Head well compressed, rather deep, triangular in profile with 

 lower profile slightly more inclined, upper profile a little concave, 

 and flattened head sides a little approximated below. Snout with 

 upper profile nearl.y straight, surface convex, and its length | its 

 width. Eye rounded, a little ellipsoid, slightly elevated, and its 

 centre about first f in head. Pupil large, rounded. Eyelids free, 



Fig. 22. — Charax goeldii Fowler. (Type.) 



not adipose-like. Mouth large, well inclined, opens in front about 

 level with middle of eye, completely closes. Lips thin, firm, little 

 developed. Maxillary large, well inclined, free most of its distal 

 length which extends down below and a little behind posterior eye 

 edge, and distal expansion about If in eye. Teeth in bands in jaws, 

 largely irregularly biserial, conic, sharp-pointed, close-set and mostly 

 uniform. Maxillary with its entire lower edge furnished Avith 

 continuation of teeth of upper jaw in similar disposition. Sides of 

 mandible with teeth mostly uniserial and inconspicuous. Upper 

 jaw with 2 pairs of canines and mandible with 3 pairs, of*which 

 symphyseal pair wide-set. Each jaw also with several smaller 

 additional canines. No palatine teeth. Tongue rather small, 

 depressed, rather spatulate, rounded and free in front. Inner 

 38 



