FISHES CYPRINIDAE CYPRINELLA BECKWITHI. 



267 



3. CYPEINELLA GUNNISONI, Gr.d. 



SPEC. CHAR. 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. Cyprindla 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 but not so deep as in the preceding species. The head is smaller than in 

 C. umbrosa, but 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 ; 7, 1, 9, 8, 1, 6 ; V 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. 



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. 



Svv.Cyprindla beckwithi, 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 C. 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 -f 1 ; A 2, 9 + 1 ; C 5, 1, 9, 8, 1, 6 ; V 1, 8 ; P 13. 



