FIS HES—CYPRINIDAE—MONTANA PULCHELLA. 
275 
is maculated with blackish along the peduncle of the tail. The dorsal and caudal are greyish 
yellow ; the rest of the fins yellowish. 
List of specimens. 
Catal. 
No. 
Coir. No. 
of teeth. 
No. of 
spec. 
Sex and age. 
Locality. 
When col¬ 
lected. 
Whence obtained. j 
Orig’l 
No. 
Nature pf 
specimen. 
Collected by— 
119 
2704 
12 
Adult and young. 
Leon river, tributary of Rio 
San Antonio, Texas. 
1853 
Lieut. A. W. Whipple.. 
n 
Alcoholic 
Dr. C. B. Kennerly. 
4. MONTANA LAETABILIS, G r d . 
Spec. Char. —Body elongated, sub-fusiform. Head contained four times and a half in the total length. Snout sub conical; 
jaws equal. Posterior extremity of maxillar bone extending to a vertical line drawn in front of the orbit. Eye large and 
circular ; its diameter entering a little over three times in the length of the side of the head. Anterior margin of dorsal fin 
nearer the insertion of the caudal than the tip of the snout. Pectorals and ventrals well developed. Reddish brown above ; 
sides silvery ; beneath yellowish. 
Syn. — Montana laetabilis, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 200. 
The body is elongated, sub-fusiform in profile, the peduncle of the tail slender. The head is 
well developed, and contained four times and a half in the total length, which measures about 
two inches. The greatest depth is equal to the length of the head. The fins are quite 
conspicuously developed ; the dorsal is much higher, and the anal much deeper, than long ; 
the anterior margin of the anal is nearer the isthmus than the fork of the caudal. The caudal 
itself being hut moderately furcated, and its posterior margin crescent-shaped. The origin of 
the ventrals is nearer the extremity of the snout than the insertion of the caudal; their tips 
overlapping the vent and reaching the anterior margin of the anal. The pectorals are slender 
and lanceolated ; their tips extending to the insertion of the ventrals. The following is the 
formula of the fins : 
D 2, 8 + 1 ; A 2, 9 + 1 ; C 8, 1, 9, 8, 1, 9 ; V 1, 8 ; P 13. 
The scales are of moderate development and rather deciduous ; the lateral line being, as usual, 
deflexed upon the middle of the abdomen, and nearer the insertion of the ventrals than the 
base of the dorsal. 
The color of the upper region is reddish brown, the abdomen being yellowish white, whilst 
the middle of the sides reflect a silvery tint. The fins are yellowish. 
List of specimens. 
Catal. 
Corr. No. 
No. of 
Sex and age. 
Locality. 
When col¬ 
Whence obtained. 
Orig’l Nature of 
Collected by— 
No. 
of teeth. 
epee. 
lected. 
No. specimen. 
120 
2705 
12 
Adult and young. 
Hurrah creek, tributary of Rio 
Pecos. 
1853 
Lieut. A. W. Whipple.. 
XII. Alcoholic. 
H. B. Mollhausen.. 
5. MONTANA PULCHELLA, Grd. 
Plate LYIII, Figs. 11—15. 
Spec. Char. —Body rather short and deep. Head constituting the fifth of the whole length. Snout sub-conical ; upper jaw 
overlapping slightly the lower one. Posterior extremity of the maxillary extending to a vertical line drawn behind the nostrils. 
Eye moderate sized and circular ; its diameter entering three times and a half, or a little more, in the length of the side of the 
head. Anterior margin of dorsal fin nearer tne insertion of the caudal than the extremity of the snout. Ventrals and pectorals 
of moderate development. Reddish brown above, silvery upon the sides, and brownish yellow beneath. Fins unicolor. 
Syn. —Moniana pulchella, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 200. 
