FISHES OF COLORADO 49 



f. Body elongate; depth 5 . 2 in the length iV. Aora/ji Cockerell 



ff. Body compressed, quite deep in adults; depth 4.4 (young) to 3.25 (adults) in 

 the length; scales on the sides much deeper than long. N. cornutus (Mitchill) 

 ee. 9 scales between the base of the first ray of the dorsal fin and the lateral line. 



A^. unhersitatis Evermann and Cockerell 

 aa. Without dusky lateral bands or clouds; body much compressed and deep; color bluish, sides 

 dull silvery, a dusky violet humeral bar; fins of the males often bright red. 



A', lulrensis (Baird and Girard) 



Notropis cayuga Meek 



Cayuga Shiner 



Notropis cayuga Meek, Ann. Acad. Nat. Hist. N.Y., p. 305, 1888 (Cayuga Lake, New York); 

 JuDAY, Univ. Colo. Studies, Vol. II, p. 113, 1903 (Longmont); Jdday, Bull. U.S. Pish Com. for 

 1004, P- 227, 1905 (Longmont). 



Body elongate, not strongly compressed, head rather long; depth 4. 5 to 5. 25, 

 head 3. 75 to 4 in the length to the base of the caudal; eye large, 3 to 3. 5 in the 

 head and about i in the snout; mouth smaU terminal and somewhat oblique, 

 angle of the mouth not reaching the level of the anterior margin of the eye; dorsal 

 short and high, base of its first ray posterior to the level of the ventrals; dorsal 

 rays 8; pectorals short, not reaching the ventrals; ventrals reaching the anal 

 opening; anal fin of 8 or sometimes 7 rays; scales s, 34-38, 3 or 4, lateral line rather 

 straight, somewhat interrupted; 12 to 16 rows of scales in front of the dorsal fin; 

 size small, length 2 . 5 inches or less. 



Color olivaceous dorsally, shading to lighter below; sides more or less silvery; 

 a very faint dusky mid-dorsal stripe; a distinct black lateral stripe extending from 

 a faint spot at the base of the caudal fin along the lateral line, across the side of 

 the head, through the eye to the tip of the snout; scales above the lateral line 

 outlined with dusky. 



This little shiner ranges through northern United States and lower Canada 

 east of the Rocky Mountains and south into Arkansas. It spawns in late spring 

 and early summer. 



Colorado specimens. — University Museum: Boulder Creek, Boulder, October, 1903 (6 speci- 

 mens, 45-60 mm.), C. Juday and J. Henderson, No. 25. 



Notropis piptolepis (Cope) 

 Platte River Shiner 



Pkotogenis piptolepis Cope, Ilaydcn Geol. Survey of Wyoming for 1870, p. 438, 1871 (Red 

 Cloud Creek, tributary of the North Platte River). 



Notropis piptolepis (Cope) — Juday, Univ. Colo. Studies, Vol. II, p. 113, 1903 (Boulder); 

 JtTOAY, Bull. U.S. Fish Com. for IQ04, p. 227, 1905 (Boulder). 



Notropis gilberii Jordan and Meek — Jordan, Bull. U.S. Fish Com., Vol. IX, p. 8, 1889 

 Denver. (Listed as possibly Pkotogenis piptolepis Cope.) 



Body elongate, subterete, but slightly compressed; head rather long; depth 

 4 to 4. 5, head 3. 75 to 4 in the length to the base of the caudal; eye rather large, 



