FISHES—CYPRINIDAE—CYFRINELLA LUDIBUNDA. 
271 
9. CYPRINELLA LUGUBRIS, Grd. 
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. 
Syn. — Cyprinella lugubris, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 199. 
This species is one of those collected by the party of which the gallant Gunnison was the 
commander. 
It is elongated, sub-fusiform ; the head being large and so is the mouth, although the latter 
is smaller than in C. macrostoma , referred to in the United States and Mexican Boundary report. 
The ventrals are small, posteriorly truncated, inserted under the anterior margin of the dorsal ; 
their tips not reaching the vent. The pectorals are lanceolated, and their extremities not 
extending as far as the origin of the ventrals. The dorsal is much higher, and the anal 
somewhat deeper, than long ; the anterior margin of the latter being nearly equidistant 
between the isthmus and the tip of the lower lobe of the caudal. 
D 2, 8 + 1; A 2, 9 + 1; C 7, 1, 9, 8, 1, 8; V 1, 8 ; P 14. 
The scales are of hut moderate development. The color is dark brown above, the sides and 
the abdomen pervaded with a silvery tint. The fins are unicolor, greyish and yellowish. 
List of specimens. 
Catal. 
No. 
Cor. No. 
of teeth 
IVo. of 
spec. 
Age.- 
Locality. 
When col¬ 
lected. 
Whence obtained. 
Orig’l 
No. 
Nature of 
specimen. 
Collected by— 
HI 
2720 
i 
Adult. 
Cottonwood creek, Utah.. 
1853 
Lieut. E. G.Beckwith.. 
1 
Alcoholic.. 
Mr. ICreuzfeld. 
10. CYPRINELLA LUDIBUNDA, Grd. 
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 flanlis silvery ; lateral line marked with black dots. 
Syn. — Cyprintlla ludibunda, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 199. 
This species is an associate of the preceding one, and was collected under the same 
unfortunate circumstances. 
Although all the specimens which we have examined are immature, still there is no doubt 
in our mind as to its specific difference from all the species hereto alluded to. The head is 
small and conical, with the snout round and tapering. The mouth being small. The ventrals 
are inserted in advance of the anterior margin of the dorsal. 
D 1, 8 ; A 1, 6 ; C 4, 1, 9, 8, 1, 5 ; Y 1, 8 ; P 12. 
Owing to the somewhat damaged condition of the fins, the foregoing formula of the rays 
must he considered as an approximation, and not held for absolutely correct. 
