470 PROCEEDINGS OF THE ACADEMY OF [July, 



female, has: Head 3^; depth 4f ; D. I. 7; A. iv, 8; width of head If 

 in its length; eye 3 in interorbital space; width of mouth 2| in head. 

 Depressed dorsal with only prolonged tips of rays reaching adipose 

 dorsal. The rays of this fin are similar to those found on examples 

 by Prof. Vaillant.^^ In this case the dorsal spine is furnished with a 

 long cutaneous point, while those of the three following branched rays 

 are long, slender and pointed and graduated from the first which is 

 longest. Ventral inserted about opposite the last dorsal rays and 

 when depressed not reaching origin of anal. 



22. Hypselobagrus nigrioeps (Valenciennes). 



Head 4^; depth 4^; snout 2^ in head; eye 4; width of mouth 3y; 

 interorbital space 3^. One example 6y| inches long.^* 



23, Glyptothorax platypogon (Valenciennes). 



Head 3i; depth 5; D. I, 6; A. iv, 10; P. I, 9; V. i, 5; width of head 

 If in its length ; depth of head over middle of eye 2^ ; snout 2^^ ; width 

 of mouth 2; dorsal spine If, to end of its filament 1|-; pectoral spine 

 If; length of pectoral fin 1^; ventral l^; least depth of caudal pedun- 

 cle 2h; base of anal ly%; interorbital space 4; eye 2^ in interorbital 

 space. 



Body rather robust, compressed, and greatest depth about origin 

 of spinous dorsal. Caudal peduncle compressed, rather deep, its least 

 depth about If in its length. 



Head broad, convex above, and depressed or flattened below. 

 Upper profile evenly though shallowly convex from tip of snout to 

 origin of spinous dorsal. Snout long, broad, flattened medianly, pro- 

 truding well beyond mandible, and profile slightly curved. When 

 viewed from above margin of head is broadly convex. Eye small, 

 superior, a little longer than deep, and a trifle posterior in length of 

 head. Mouth broad, and lips rather fleshy and thin. Maxillary bar- 

 bel broad basally, and reaching a trifle beyond origin of pectoral. 

 Nasal barbel small, reaching a trifle over half way to front of eye. 

 Outer mental barbel not quite extending to origin of pectoral. Inner 

 mental barbel a little shorter than outer. Rather broad bands of fine 

 slender numerous pointed teeth in jaw^s. No teeth on roof of mouth or 

 on tongue. Tongue broad, thick, but little differentiated, and only its 

 front edge slightly free. Nostrils close together, large, near front edge 



^ Macrones nemurws Vaillant, Notes Leyd. Mus., XXIV, November, 1902, p. 54. 



^^ This agrees with an example from the Paris Museum in Acad. Nat. Sci. Phila., 

 except as notes above will show. The Academv's example has: Head 4; depth 

 4^ ; D. I, 7 ; A. iv, 7, i ; P. I, 10 ; V. i, 5 ; width of head 1^ in its length ; snout 2^ ; 

 eye Sf; width of mouth 3; interorbital space 3f ; dorsal spine If- pectoral spine 

 If ; base of adipose fin about 2j\ in head and trunk. Lengtli 5^ inches. 



