4 University of Michigan 



latter; lo scales above 1. 1., 8 below; 31 predorsal scales ; head 

 width 2 2/5 its length ; head depth at occiput i 4/'7 ; snout 

 3 3/4; eye 3 3/4; maxillary 21/2; interorbital 3 4/5 ; mandible 

 2 ; first branched dorsal ray i 3/4 ; first branched anal ray 2 ; 

 least depth of caudal peduncle 2 3/4 ; pectoral fin i 4/7 ; ven- 

 tral I 34; lower caudal lobe about i 1/6. 



Body elongated, compressed, j^rofiles similarly convex, ap- 

 parently dee})est at ventral origins and edges convex. Caudal 

 peduncle compressed, least depth about i 3/4 its length. 



Head compressed, profiles similar, flattened sides not con- 

 verging above or below. Snout slightly convex over surface, 

 its profile a trifle convex and basal "Avidth about i 1/4 its 

 length. Eye a little ellipsoid, high or close to upper profile, at 

 first 2/5 in head. Mouth moderate, gape short and horizontal. 

 Maxillary well inclined, reaches back opposite front pupil 

 edge, its greatest distal expansion 2 2/3 in eye. Teeth in jaws 

 small, conic, of about uniform size, curved inward, series sep- 

 arated in front of jaws and all more or less concealed within 

 thickened lips. Series of about 6 teeth in each premaxillary 

 edge inside in front. Also a series similarly along each an- 

 terior maxillary edge. Small patch of small teeth on front of 

 vomer and each palatine roughened with similar teeth, these 

 most developed anteriorly on bones. Tongue smooth, depress- 

 ed, edge free in front and along sides, rather broad front 

 rounded. Mandible shallow in front, rami well elevated in- 

 side mouth anteriorly and equal with snout tip in front. Front 

 of each jaw entire, mouth transversely horizontal as viewed 

 from before. Nostrils about midway in snout. Interorbital 

 .broadly depressed. Upper maxillary edge slips below narrow, 

 straight and oblique preorbital edge. Postorbital wndth half 



