268 



U. S. p. E. E. EXP. AND SURVEKS — ZOOLOGY — GENERAL REPORT. 



The scales, as already stated, are larger than in either C. gunnisoni or C. umhrosa ; their 

 upper and lower edges tapering somewhat as in tlie latter mentioned species. 



The color is greyish brown above, and orange red beneath, with an obsolete silvery streak 

 along the middle of the flanks. The fins being unicolor. 



List of specimens. 



5. CYPEINELLA SUA VIS, Grd. 



Spec. Char. — Body rather short, sub-fueiform in profile; back slightly arched. Head constituting the fifth of the entire 

 length. Diameter of eye eutering nearly four times in the length of the side of the head. Gape of the mouth oblicjue. Posterior 

 extremity of maxillar bone extending to a vertical line drawn behind the nostrils. Anterior margin of dorsal fin nearer the 

 insertion of the caudal than the tip of the snout. Origin of ventrals situated somewhat in advance of tlie dorsal. Pectorals 

 slender and elongated. Yellowish brown, ligher beneath than above ; middle of flanks metallic white. Fins unicolor. 



Syn. — CyprineUa suavis, Grd. in Proc. Acad. Nat. Sc. Philad. VIII, 1856, 197. 



By its general form and appearance this species establishes the transition between the deep 

 and slender species. The head forms about the fifth, and the depth the fourth, of the total length. 

 The dorsal fin is higher, and the anal deeper than long ; the anterior margin of the anal is 

 nearer the tip of the lower lobe of the caudal than the extremity of the snout. The tips of the 

 ventrals approximate the vent ; but the extremities of the pectorals do not reach the origin 

 of the ventrals. 



D 2, 8 + 1; A 2, 9 + 1; 7, 1, 9,8, 1, 6; V 1, 8; P 14. 



The scales are moderate sized, sub-elliptical in their outline, though rather truncated ante- 

 riorly. The lateral line describes a gentle curve below the middle of the flanks. 



The color is yellowi.sh brown above, the middle of the flanks reflecting a metallic white tint, 

 whilst the belly is light yellow. The fins being unicolor, of a light yellowish tint. 



List of specimens. 



6. CYPEINELLA LEPIDA, Grd. 

 Plate LVIII, Figs. 21—25. 



Spec. Char. — Body elongated, sub-fusiform. Peduncle of the tail robust. Head conlninod four times and a lialf in the total 

 length. Eye well developed ; its diameter entering four times in the length of the side of llie head. Snout rather blunt ; gape 

 of mouth somewliat arched ; posterior extremity of llie maxillary extending to a vertical line drawn before the orbit. Anterior 

 margin of dorsal fin nearer the insertion of the caudal than the tip of the snout. Origin of ventrals placed slightly in advance 

 of the dorsal. Pectorals moderate. Rcddisli ash al)ove ; pale siilpliur yellow beneath. Fins unicolor. '' 



SiK.—Cyprimlla lepida, Gnt). in Proc. Acad. Nat. Sc. Philad. Vlll, 1856, 197. 



