FISHES—CYPRINIDAE—CYPRINELLA BECKWITHI. 
267 
3. CYPRINELLA GUNNISON!, Grd. 
Spec. Chak. —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 ventrals situated 
in advance of the dorsal. Pectorals and ventrals rather small. Reddish brown, lighter beneath than above. Fins unicolor. 
Syn, —Cyprinella gunnisoni, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 197. 
This species is inscribed to the memory of an officer who had taken at heart the promotion of 
science in his country, and was brought to a most lamentable death while in the active field of his 
duty. 
The body is short hut not so deep as in the preceding species. The head is smaller than in 
C. umbrosa , hut the eye preserves the same proportions. The dorsal fin is higher, and the anal 
deeper, than long. The anterior margin of the anal being somewhat nearer the fork of the 
caudal than the isthmus, whilst the anterior margin of the dorsal is nearer the insertion of the 
caudal than the tip of the snout. The tips of the ventrals scarcely reach the vent, and the 
pectorals do not extend as far as the origin of the ventrals. 
D 2, 8 + 1; A 2, 9 + 1; C 7, 1, 9, 8, 1, 6 ; Y 1, 8 ; P 13. 
The scales are large, not so much imbricated as in C. umbrosa , although equally as deep, and 
anteriorly sub-truncated. The upper and lower margins are less tapering than in the species 
just referred to. 
The color is reddish brown, darker along the dorsal region than on the abdomen ; the middle 
of the flank exhibiting a whitish metallic reflect. The dorsal and caudal are greyish olive ; the 
rest of the fins being yellowish. 
List of specimens. 
Oatal. 
.No. 
Cor. No. of 
teeth. 
No. of 
spec. 
Age. 
Locality. 
When col¬ 
lected. 
Whence obtained. 
Orig’l 
No. 
Nature of 
specimen. 
Collected by— 
139 
2718 
12 
A. & Y.... 
Cottonwood creek, Utah.... 
1854 
Lt. E. G. Beckwith. 
1 
Alcoholic.... 
Mr. Kreuzfeld. 
4. CYPRINELLA BECKWITHI, Grd. 
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. 
Syn. —Cyprinella beckwilhi, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 197. 
A species allied to the preceding one, by its external form and general appearance, but readily 
distinguished from it by a larger head and larger scales. The latter being likewise larger than 
in G. umbrosa. The dorsal fin is much higher than long ; the anal longer than deep, with its 
anterior margin nearer the fork of the caudal than the isthmus. The tips of the ventrals just 
reaching the vent, whilst the pectorals are far from approximating the origin of the ventrals. 
D 2, 8 + 1; A 2, 9 + 1; C 5, 1, 9, 8, 1, 6 ; Y 1, 8 ; P 13. 
