FISHES OF COLORADO 53 



species of this genus, its food consists of surface insects, aquatic insects and some 

 plant material, other types of food being utilized occasionally. 



Colorado specimens. — University Museum: Boulder Creek, Boulder, October, 1903 (5 speci- 

 mens, go-i4omm.), C. Juday and J. Henderson, No. 2; St. Vrain Creek, Longmont, October 17 

 1903 (120 mm.), C. Juday and D. W. Spangler, No. 41; Boulder Creek, Boulder, April 23, 1904 

 (2 specimens, 150 mm.), J. Henderson, No. 23; West Plum Creek near Castle Rock, June 8, 1912 

 (148 specimens, 3S-I35 mm.), A. G. Vestal and M. M. Ellis, No. 360; Boulder Creek 6 miles east of 

 Boulder, July 25, 1912 (92 specimens, 50-130 mm.), M. M. Ellis, No. 361; South Platte, Julesburg, 

 July 19, 1912 (66 specimens, 70-100 ram.), J. Henderson and M. M. Ellis, No. 362; Lodgepole 

 Creek near Ovid, July 20, 1912 (59 specimens, 75-125 mm.), J. Henderson and M. M. Ellis, No. 363; 

 State Teachers' College Museum: Cache la Poudre near Greeley, A. E. Beardsley; Colorado College 

 Museum: Cache la Poudre River near Greeley, I. C. Hall. 



Notropis universitatis Evermann and Cockerell 



Notropis universitatis Evermann and Cockerell, Proc. Biol. Soc. Washington, Vol. XXII, p. 187, 

 1909 (Boulder Creek, Boulder). 



This species is based at present on one specimen collected in Boulder Creek 

 at a time when all of the fishes were killed by the introduction of mine waste in 

 the canyon above Boulder. No other specimens have been found in the several 

 subsequent collections made at Boulder. The original description is quoted below: 



Close to N. zonatus, but with smaller scales and different coloration. There are 45 scales in 

 the lateral line and 9 between the origin of the dorsal and the lateral line, as against 42 and 6 in 

 A'^. zonatus. A pale-orange dorsal band on a bright straw-yellow ground, the scales minutely 

 black-dotted, but not appearing dusky margined; sides strongly silvery; lateral line complete; 

 a grayish lateral stripe; dorsal and caudal fins yellowish; dorsal and chin black-speckled. 



Notropis lutrensis (Baird and Girard) 

 Redfin (Fig. 29) 



Leuciscus lutrensis Baird and Girard, Proc. Acad. Nat. Sci. Phila., p. 391, 1853 (Otter Creek, 

 tributary of the north fork of Red River, Arkansas) . 



Notropis lutrensis (Baird and Girard) — Jordan, Bull. U.S. Fish Com., Vol. IX, pp. 8 and 16, 

 1889 (Denver; Pueblo; Fountain Creek, Pueblo); Juday, Univ. Colo. Studies, Vol. II, p. 113, 1903 

 (Longmont); Juday, Bull. U.S. Fish Com. for IQ04, p. 227, 1905 (Longmont). 



Hypsilepis jugalis (Cope) — Cope and Yarrow, Wheeler Survey, Vol. V, p. 654, 1875 

 (Pueblo). 



Body strongly compressed, rather deep in adults; head short and conic; 

 depth 3.25 to almost 4, head 3 . 75 to 4. 25 in the length to the base of the caudal; 

 young and females more slender than adult males, their depth often as low as 5 in 

 the length; eye 3 (very small specimens) to 4 (adult males) in the head, about 

 2. 25 in the interorbital distance and i to i . 5 in the snout; mouth small, terminal 

 and oblique, angle of the mouth not reaching the anterior margin of the eye; 

 nostril prominent, on the dorsal surface of the head, septum large; dorsal fin short 

 and high, of usually 8 rays, length of its base less than that of its longest ray 



