24 
ZOOLOGY. 
15. CYPRINELLA GUNNISONI, Grd. 
Gen. Rep. 267. 
Spec. Chau. —Body short, rather deep; back somewhat arched. Peduncle of tail of moderate development. Head con¬ 
stituting less than the fifth of the total length. Eye moderate sized ; its diameter entering three times and a half in the length 
of the side of the head. Posterior extremity of maxillar bone reaching a vertical line drawn near the anterior rim of the orbit. 
Anterior margin of dorsal fin equidistant between the tip of the snout and the fork of the caudal. Origin of veutrals situated 
in advance of the dorsal. Pectorals and ventrals rather small. Reddish brown, lighter beneath than above. Fins unicolor. 
139. Cottonwood creek, Utah. Mr. Kreuzfeld. 
16. CYPRINELLA BECKWITHI, Grd. 
Gen. Rep. 267. 
Spec. Char. —Body short, rather deep; back somewhat arched. Peduncle of tail slender. Head contained four times and 
a half in the total length. Eye moderate sized ; its diameter entering four times in the length of the side of the head. Gape 
of the mouth somewhat oblique. Posterior extremity of the maxillary extending to a vertical line drawn in front of the orbit. 
Anterior margin of dorsal fin somewhat nearer the insertion of the caudal than the tip of the snout. Origin of ventrals situated 
somewhat in advance of the dorsal. Pectorals slender, larger than the ventrals. Greyish brown above, orange red beneath 
Fins unicolor. 
135. Sluice of Arkansas river, near Fort Makee. Mr. Kreuzfeld. 
17. CYPRINELLA LUGUBRIS, Grd. 
Gen. Rep. 271. 
Spec. Char. —Body elongated, sub-fusiform. Peduncle of the tail rather slender. Head contained four times and a half in 
the total length. Eye large; its diameter entering three times and a half in the length of the side of the head. Snout sub- 
conical ; gape of the mouth oblique ; posterior extremity of the maxillary corresponding to a vertical line drawn at the anterior 
rim of the orbit. Anterior margin of dorsal fin nearer the tip of the snout than the insertion of the caudal. Origin of the 
ventrals situated opposite the anterior edge of the dorsal. Pectorals and ventrals rather small. Dark brown above; sides and 
abdomen silvery white. Fins unicolor. 
141. Cottonwood creek, Utah. Mr. Kreuzfeld. 
18. CYTRINELLA LUDIBUNDA, Grd. 
Gen. Rep. 271. 
Spec. Char. _Body elongated, sub-fusiform. Peduncle of the tail rather slender. Head constituting the fifth of the total 
length. Eye large; its diameter entering about three times in the length of the side of the head. Snout sub-conical; gape of 
the mouth nearly horizontal; posterior extremity of maxillar bone corresponding to a vertical line drawn behind the nostrils. 
Anterior margin of dorsal fin equidistant between the insertion of the caudal and the tip of the snout. Origin of ventrals 
situated somewhat in advance of the anterior edge of the dorsal. Pectorals and ventrals of moderate development. Reddish 
brown; middle of the flanks silvery; lateral line marked with black dots. 
132. Cottonwood creek, Utah. Mr. Kreuzfeld. 
19. MONIANA TRISTIS, Grd. 
Gen. Rep. 277. 
Spec. Char. _Body elongated, sub-fusiform. Peduncle of tail long and slender. Head constituting the fifth of the length. 
Snout rounded and rather abbreviated; jaws equal. Posterior extremity of maxillar bone extending to a vertical line drawn 
behind the nostrils. Eye large and circular; its diameter entering about three times and a half in the length of the side of the 
head Anterior margin of dorsal fin somewhat nearer the extremity of the snout than the insertion of the caudal. Vertical 
fins w'ell developed. Reddish brown, lighter beneath than above, with a lateral dark streak. 
93. Mr. Kreuzfeld. 
