Family V. CyprinidtE. 69 



Head 3^ to 4; depth 3; D. 8; A. 7; scales 8-40-4. Body very- 

 stout and moderately compressed, the back arched; the head very 

 blunt, thick, and rounded; mouth small, somewhat oblique; the cleft 

 mostly anterior; the jaws equal; teeth 4-4; snout $ 2 4 in head; eye 

 small, 3%" to 4 in the head; origin of dorsal midway between tip 

 of snout and base of caudal; base of dorsal 2 in head, its longest ray 

 i}4 in head; 18 scales in a series between nape and dorsal fin; pec- 

 torals ifA in head; ventrals if in head; base of anal 2>£ in head; 

 caudal fin forked; caudal peduncle very stout, its least depth 1^ 

 in head; males in breeding season with prickles on head and body; 

 lateral line complete. 



Color dark, lighter below; sides with about 8 to 10 more or less 

 conspicuous cross-bars; fins with the middle parts dusky or black. 

 The smaller specimens do not have as prominent bars as the larger 

 ones, but they have a more prominent caudal spot. A few males 

 are black with a white vertical band on preopercle behind eye; all 

 of the fins are black with light margins. Length about 2^ inches. 

 Spawning time apparently the first part of June 



Subgenus Orcella Jordan & Evermann. 



60. Nototropis orca Woolman. 



Notropis orca Woolman, Bull. U. S. Fish Comm., 1894, 56; Rio 

 Grande, El Paso, Texas: Jordan & Evermann, Bull. 47, U. S. 

 Nat. Mus., 1896, 289. 



Rio Grande at El Paso, Texas. 



Head 4^; depth 5; D. 7; A. 8; scales 8-42-4. Body robust, 

 little compressed, with broad back; dorsal outline somewhat elevated; 

 head heavy; snout blunt, decurved; mouth subinferior, little oblique; 

 lower jaw slightly included; maxillary scarcely reaching vertical from 

 pupil; top of head transversely rounded so that the eye is as near 

 the lower as the upper profile of the head; interorbital space very 

 wide and very convex, equals distance from tip of snout to pupil; 

 origin of dorsal fin a little nearer snout than base of caudal; longest 

 dorsal ray i\ in head; pectorals slightly falcate, about reaching 

 ventrals, x}4 in head; ventrals 2 in head; caudal deeply forked; scales 

 rather large, thin; lateral line somewhat decurved. 



Color pale; side with a broad distinct silvery band as broad as 

 length of snout, bordered above by a narrow plumbeous line; back 

 sparsely covered with fine dark punctulations ; median line of back 

 with a faint plumbeous band; top of head darkish; fins pale. Length 

 about 2> l A inches. (Jordan & Evermann.) 



