31. CYPRINID^ SQUALTUS. 
235 
evenly forked. Pectorals short, not reaching nearly to ventrals; ven- 
trals to vent. Dusky bluish; sides dark; a red spot at bases of ven- 
trals and anal. Head 4; depth 4. D. 9; A. 8; scales lI-oG-6; teeth 
2, 5-4, 2. L. G inches. Utah Lake. 
(Jonlau &. Gilbert, Proo. U. S. Nat. Mus. 1880, 461.) 
376. S. ardesiacus (Cope) J. & G. 
Body rather stout, compressed. Head heavy, muzzle short. Mouth 
short, very oblique, the jaws about equal, the maxillary reaching iiast 
tlie front of the large eye. Eye 4 in head. I’ectoral fin long, nearly 
reaching anal. Olivaceous above; a narrow dark lateral band, follow- 
ing the direction of the back. Anal fin short. Head 3J; depth 4^. 
D. 8; A. 8; scales 17-G3-8; teeth 2, 5-4, 2. L.4iQches. Exact locality 
unknown; jirobably Nevada. 
{Gila ardesiaca CoiJe, Zool. Wheeler’s Expl. W. lOOtli Mer. v, 660.) 
377. S. pandora (Cope) J. &, G. — Chuh of ihe Elo Grande; Pescadito. 
Bodj' fusiform. Head small, broad and rather flat at the muzzle. 
Jaws equal, maxillary not reaching line of orbit. Eye small, G^ in head. 
Dorsal fin posterior. Silvery, darker above. A broad, ill -defined lateral 
band. Physiognomy of Ceratichthys rather than of ^^qualius. Head 4; 
depth 4|. D. 8; A. 8; scales 17-Gl-O (17-59-10 to 18-G5-11); teeth 
normally 2, 5-4, 2, sometimes 2, 4-4, 2, or even 1, 4—4, 1, in abnormal or 
immature specimens; the second tooth sometimes with a .small grinding 
surface. L. 8 inches. Eio Grande region. “The most abundant fish 
in New Mexico,” and quite variable in characters usually very constant 
among these fishes. 
{ClinoHtomus pandora Cope, Hayden’s Geol. Surv. Mont. 1871, 475.) 
378. S. ma.r|?as’itus (Cope) J. & G. 
Body stout and thick, little compressed, the l)ack somewhat elevated. 
Caudal peduncle thick. Head blunt, thi<;k and rounded. Mouth small, 
terminal, oblique, the upjier lip below the orbit, the maxillary not reach- 
ing the line of the orbit. Eye rather large. Scales rather small. Lat- 
eral line decurved. Fins rather large. Dorsal fin iiosterior. Colora- 
tion above dusky olive; sides idumbeous silvery; belly white, crimson 
in spring males; snout dusky; fins plain; scales i)unctate. Head 4; 
depth 4. D. 8; A. 8; scales 11-58-8; teeth 2, 5-4, 2. L. 3 inches. 
Susquehanna Eiver. A handsome fish, quite unlike any other American 
species, resembling most Phoximis neogwiis. 
{Clinostomus maryarita Cope, Cypr. Penn. 1866, 377 ; Leudscus niaryarita Giiutber, 
vii, 246.) 
