PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 513 



Vol. VII, No. 83. \Va«!ihBn§^toQ9, D. V. Jaai. J^T, 1885. 



Cliola (Hybopsis) topeka, t*p. uov. 



Body compressed, the back elevated, the anterior profile convex from 

 dorsal forward to occiput, wLicb is depressed. Snout rather blunt, not 

 at all projecting- beyond the mouth, which is terminal, oblique, and very 

 small; maxillary not reaching beyond vertical from nostril, about 4f 

 in lengtli of head. Eye equaling snout, 4^ in head ; interorbital width 

 2^. Teeth 4-4, with well-developed grinding surfiice. 



Insertion of ventrals directly under origin of dorsal, which is much 

 nearer tip of snout than base of caudal ; highest dorsal ray 1| in head. 

 Caudal broad with many rudimentary basal rays above and below, the 

 longest ray about equaling head. Pectorals reaching ventrals, and 

 the latter to vent (both these fins shorter iaone specimen). 



Scales large, not high nor very closely imbricated, of uniform size 

 throughout; 14 scales before dorsal; lateral line straight, not at all 

 decurved, rising very slightly immediately behind head. 



Head 4 to 4^ in length ; depth 3f. D. 8, A. 7; Lat. 1. 35f. 



Olivaceous, more or less silvery on middle of sides, scales of back 

 witJi dusky margins ; a dark vertebral streak ; a dusky streak, formed 

 by coarse dark points, runs from snout through eye across opercles 

 an«l along middle of sides to tail, where it ends in a small dusky spot. 

 Fins unmarked. This species resembles somewhat Gliola straminea, but 

 difi'ers conspicuously in the greater depth, smaller eye, and in its ter- 

 minal, oblique, smaller mouth. 



Three si)ecimens, 2^ inches long, from Shunganunga Creek, tributary 

 of Kansas River. 



Type specimen numbered 30609 on the catalogue of the U. S. Na- 

 tional Museum. 



Minuilus Lythrurus) nigripiunis, sp. nov. 



Body very high, the back moderately compressed, and much ele- 

 vated, rising in a strong curve from occiput to front of dorsal ; supra-or- 

 bital region depressed, the profile of top of head concave ; snout con- 

 vexly rounded, rather short and blunt. Mouth terminal, wide, very- 

 oblique, the lower jaw slightly included, its tip not projecting; maxil- 

 lary scarcely reaching front of orbit, 2§ in head. Eye moderate, its 

 diameter nearly equaling snout, § interorbital width, 4 in head. Teeth 

 2-4-4-2, with strong hook, and visible grinding surface. 



Dorsal fin inserted behind front of ventrals, its origin midway be- 

 tween tip of snout and base of median (laudal rays (slightly nearer 

 base of caudal in a younger specimen, a female, with back less ele- 

 vated). Base of dorsal § its height, the longest ray If in head. Base 

 of anal but little shorter than its longest ray, which is | length of head. 

 Caudal rather short, less than length of head. Ventrals reaching vent, 

 If in head ; pectorals reaching base of ventrals, l^ in head. 

 Proc. Nat. Mus. 84 33 



