MUSEUM OF COMPARATIVE ZOOLOGY. 91 



notch, bordered above by a narrow silvery line. Scales punctulate with 

 brown. 



Parras, Dr. Palmer. 



Cs^rinella rubripinna sp. nov. 



D. 2-f 8 ; A. 2+ 11 ; V. 8 (7-8) ; P. 13 ; L. lat. 38 ; L. trans. 7+ 1 -|-3. 



Height two and two thirds and length of head four and one half times in 

 length of body, exclusive of caudal. Body much compressed. Head small. 

 Snout shorter than diameter of eye. Ma.Yillary not reaching a vertical from 

 the edge of the orbit. Outline quite convex from dorsal to back of head. 

 Caudal notch equal to about half the length of the free portion of the fin. A 

 vertical from the anterior extremity of the base of the dorsal falls near the mid- 

 dle of the space between the bases of ventrals and anal. Ventrals reaching 

 the anal. Pectorals not reaching the ventrals. Total length of largest 2^, 

 height ^ inches. The shape of a scale on the flanks is a nearly perfect loz- 

 enge, the width of one being equal to the length of three. 



Back dark to light reddish brown, commonly brown. Dorsal fin dark 

 brown. Sides flesh to rose color. Cheeks silvery. Pectorals, ventrals, and 

 anal salmon color. A narrow band of brownish from the nape to the bases of 

 the pectorals. First ray of the pectorals dark brown. Top of head lighter. 

 Caudal fin reddish. Belly and sides more or less silvery. Young with sides 

 and belly silver and back somewhat flesh-colored. 



Near Parras, Dr. Palmer. 



Gila conspersa sp. nov. 



D. 3 + 8 (9) ; A. 3 + 8 (9) ; V. 1 -f 7 (8) ; P. 16 ; L. lat. 68 to 70 ; L. trans. 

 13 + 1-1-9. 



Teeth 4.1 — 1.4, clawed. 



Length of head or height of body three and three fourths times in the total 

 length, without caudal. Body rather thick, considerably arched in front of 

 the dorsal, moderate posteriorly. Outline of the top of the head concave. 

 Maxillary reaching a vertical from the anterior edge of the orbit. Distance 

 from eye to end of isiout more than diameter of orbit. The distance to the eye 

 from the first ray of the dorsal is equal to that from the same point to the cau- 

 dal fin. Caudal notch rather less than half the length of the free portion. Base 

 of dorsal above the free portion of the ventrals. Pectorals extending about 

 three fourths of the distance to the latter, which extend to the vent. Scales 

 rounded posteriorly. Proportions and shape similar to those of C. gibbosa. 



Back and top of head brown ; belly lighter ; cheeks silvery. Scales of 

 back and flanks spriukled with small spots of brown. An indistinctly out- 

 lined band of dark above the lateral line on the posterior half of the body. 



Nazas River. 



