1906.] 



NATURAL SCIENCES OF PHILADELPHIA. 



459 



little free. Interorbital space convex, and moderately broad. Gill- 

 opening forward to front rim of orbit. Rakers 6 + 9, slender, pointed, 

 a little shorter than longest filaments which are nearly as long as orbit. 

 Tubes in lateral line simple. Color in alcohol faded brownish, lower 

 surface paler, and everywhere with more or less silvered reflections. 

 Fins pale or nearly uniform brownish. Length 2h inches (caudal 

 damaged). Type. 

 Cynopotamus gulo Cope. Fig. 48. 



Proc. Amer. Philos. Soc. Phila., XI, 1869-70 (August 19, 1870), p. 565. 



Cotypes, Nos. 8,053 (tjT)e) to 8,055, A. N. S. P. Pebas, Eastern Peru. 



John Hauxwell. 



Width of head 3^ in its length; interorbital space 4. Body strongly 

 compressed. Head strongly compressed. Snout long as broad. 

 Teeth in upper jaw uniserial, 4 enlarged canines, and several a little 

 smaller laterally as median pair of former are close together. About 10 

 canines in mandible, 5 on each side anteriorly, and subequally large. 



Fig. 48. — Cynopotamus gulo Cope. 



Other teeth all small like those on maxillary, though forming 2 series 

 anteriorly. Tongue small, fleshy, rounded in front and little free. 

 Interorbital space broad and little convex. Gill-opening forward 

 about front margin of pupil. Rakers iv, 2 + 7, ii, lanceolate, and 

 much longer than filaments or f of orbit. Lateral hne of simple tubes. 

 Color in alcohol brownish. A more or less narrow leaden streak from 

 shoulder to base of caudal, with a slightly dusky blotch at humeral 

 region and one at base of caudal. Abdomen showing through pale 



