648 



ZOOLOGY FISHES. 



APOCOPE COUESII, Yarrow, sp. nov. 



PLATE XXVII, FIGS. 2, 2a. 

 Bhinichthys hensharii, var. Ill, COPE, Proc. Am. Phil. Soc. Phila., 1874, April, 133. 



This species might almost be considered a variety of Apocope JiensJiavii, 

 Cope; but on considering the differences between the specimens examined 

 and those of the last named species, I believe it to be entitled to be retained 

 as a separate species. Form elongate, but broader than A. henshavii, with 

 overhanging, obtuse, but broader muzzle, scales larger Depth enters the total 

 length, including caudal fin, 5.75 to 6.25 times, the head entering the same 

 4.50 to 5 times. Eye 6 times in length of head ; 1.75 in interorbital width. 

 Base of Dorsal I. is nearer insertion of caudal than end of snout. Ventral 

 fins nearly reach the anal, and are nearly reached by the pectorals. Dorsal 

 fin originating behind the base of the ventrals. D. I. 8 ; A. I. 7 ; V. 7 ; 



14 



P. 12. Scales, 67. Color whitish-yellow, with numerous large bluish-black 



12 



spots on back and sides, increasing in intensity toward occiput ; no dark 

 stripe on sides. Inferior fins yellowish. 



This species is named in honor of Dr. Elliott Coues, U. S. A., the dis- 

 tinguished naturalist of the Northern Boundary Commission, to whom this 

 expedition is indebted for many favors. 



Was found very abundant in mountain streams of Arizona. 



APOCOPE VENT1UCOSA, Cope. 

 PLATE XXVIII, FIGS. 1, la. 



Ceratichthys ventricosvs, COPE, Pfoc. Am. Phil. Soc. Phila., 1874, April, 130. Id., Rep. 



Plagop. & Ichthy., Utah, 1874, 10. 



This species resembles a RMnichthys in its small scales and rather 

 elongate form and hi coloration. The muzzle does not overhang the mouth, 

 but the lower jaw is received within the upper. The head is not wide, and 

 is narrowed anteriorly, but the muzzle is obtuse both on the vertical and lateral 

 view. Orbit four times in length of head, and 1.33 times in interorbital width 



