262 CALIFORNIA ACADEMY OF SCIENCES. 



n. Adipose fin short; dorsal fin well developed; I, 6. Teeth villi- 



form. Ventrals 12-15, broadly joined to the belly or connected. 



Pectoral with 11 or more rays. Auchexipterus lii. 



bb. Maxillary and two mental barbels present. Air-bladder without 



bony covering. Top of head granular. Tetranematichthys liii. 



XLIII. ASTEROPHYSUS. 



Asteropkysus Kner, SB. Ak. Wien, xxvi, 402, 1857, fig. 

 13 (batrachus). 



Type: Aster o^iJcysus batrachus Kner. 



Gape of mouth very wide; teeth on the palate, none 

 on the vomer; lower jaw projecting. Adipose fin small. 



This genus is very little known. 



202. Asterophysus batrachus. 



Asierophysus batrachus Kner, 1. c. 403 (Marabitanos); Gitnther, Cat. 



Fish. Brit. Mus. v, 200, 1864 (copied). 

 Habitat: Marabitanos. 



Mouth terminal, f as long as the head; lower jaw pro- 

 jecting for almost the entire width of the band of teeth; 

 bands of teeth in both jaws interrupted in the middle; 

 intermaxillary band of teeth twice as wide as the mandib- 

 ulary band and reaching to the rictus. Maxillary barbels 

 reaching to the gill-opening. Mental barbels situated 

 near the symphysis, postmentals reaching to the base of 

 the pectorals. Dorsal spine over the gill-opening, gran- 

 ular in front. First anal ray in the 5 with a urogenital 

 organ opening near its tip. Light brownish, white be- 

 low. Head 3; D. I, 5; A. 13; V. 10; P. I, 7. (Kner.) 



XLIV. Trachelyopterichthys. 



Trachelyopterichthys Bleeker, Nederl. Tijdschr. i. 111, 

 1863 {toiniatus). 



Type: Trachelyopteriis twniatus Kner. 



Adipose fin none. Ventral fin of sixteen rays; anal 

 long; pectoral spine serrated on both margins. Barbels 

 6, those of the chin disposed in two pairs. Bones of the 



