FISHES. 53 



32. DIONDA SPADICEA, Grcl. 

 Gen. Rep. 229. Plate LII, Figs. 26—30. 



Spec. Char. — Body slender and sub-fusiform, compressed. Head sub-conical, constituting about the sixth of the total 

 length. Gape of mouth very slightly arched, its angle not reaching a vertical line drawn in advance of the orbit. Eye moderate, 

 sub-circular. Caudal entering about five times in the total length. Insertion of ventrals situated under the anterior margin of 

 the dorsal. Scale moderate sized, somewhat longer than deep. Reddish brown above ; dull whitish beneath, with a black spot 

 at the base of the caudal. 



34. Fort Smith, Arkansas. H. B. MoUhausen. 



34. DIONDA GRISEA, Grd. 



Gen. Rep. 230. Plate LII, Figs. 6—10. 



Spec. Char. — Body rather deep upon its middle ; greatest depth nearly equal to the length of the head. Head sub-conical 

 and slender, contained five times and a half m the total length ; snout tapering; gape of mouth nearly horizontal, its angle being 

 far from reaching a vertical line drawn in advance of the orbit. Eye moderate, sub-circular. Caudal fin entering nearly five 

 times and a half in the total length. Insertion of ventrals situated somewhat posteriorly to the anterior margin of the dorsal. 

 Scales moderate sized, deeper than long. Reddish ash above ; olivaceous beneath ; fins unicolor. 



931. Twenty miles west of Choctaw agency. H. B. Mijllhausen. 



35. HYBORHINCHUS PERSPICUUS, Grd. 



Gen. Rep. 231. Plate LII, Figs. 16—20. 



Spec. Char. — Head constituting about the fifth of the total length. Eye sub-elliptical, its diameter entering three times in 

 the length of the side of the head. Greatest depth of the body nearly equal to the length of the head. Gandal fin entering five 

 times and a half in the total length. Insertion of ventrals situated under the anterior margin of the dorsal. Scales anteriorly 

 sub-truncated. Reddish brown above, sulphur yellow beneath ; lateral line minutely dark spotted. A black spot at the base of 

 the caudal, and at the anterior margin of the dorsal also. 



144. Arkansas river, near Fort Smith. Dr. George G. Shumard. 



36. HYBORHYNCHUS PUNICEUS, Grd. 



Gen. Rep. 232. Plate LII, Figs. 1—5 and Figs. 11—15. 



Spec. Char. — Head constituting the fifth of the total length. Eye sub-circular; its diameter entering three times and a half 

 in the length of the side of the head. Greatest depth of body less than the length of the head. Caudal fin entering six times 

 in the total length. Insertion of ventrals situated somewhat posteriorly to the anterior margin of the dorsal. Scales rounded 

 upon their anterior edge. Uniformly pale red, lighter beneath than above ; fins olivaceous. 



145. Antelope creek, tributary of Canadian. Dr. Kennerly. — 146. Llano Estacado. H. 

 B. MoUhausen. 



37. HYBORHYNCHUS TENELLUS, Grd. 



Gen. Rep. 231. 



Spec. Char. — Head entering about five times and a half in the total length. Eye large, sub-circular, its diameter being 

 contained somewhat over three times in the length of side of head. Greatest depth of the body less than the length of 

 head. Caudal fin constituting about the sixth of the total length. Insertion of ventrals situated somewhat in advance of the 

 anterior margin of the dorsal. Reddish brown above ; yellowish beneath. 



143. Twenty miles west of Choctaw agency. H. B. MoUhausen. 



