648 



ZOOLOGY— FISHES. 



APOCOPE OOUESII, Yarrow, sp. nov. 

 Plate XXVII, Figs. 2, 2a. 

 Rhinichthys henshavil, var. Ill, Cope, Proc. Am. Phil. Soc. Phila., 1S74, April, 133. 



This species might almost bo considered a variety of Apocope hcnshcwii, 

 Cope; but on considering- the differences between the specimens examined 

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

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

 overhanging, obtuse, but broader muzzle, scales larger Depth enters thetotal 

 length, including caudal fin, 5.75 to G.25 times, the head entering the same 

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

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

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

 fin originating behind the base of the ventrals. D. 1.8; A. I. 7 ; V. 7 ; 



14 



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



13 



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. 



No. 



Locality. 



Date. 



Collector. 



754 





Oct. ii,iS73 



H. W. Henshaw. 



APOCOPE VENTKICOSA, Cope. ■ 



Plate XXVIII, Figs. 1, la. 



Ceratichthys ventricosus, Cope, Proc. Am. Phil. Soc. Phila., 1874, April, 136. — /</., Rep. 

 Plagop. vS; Ichthy., Utah, 1874, 10. 



This species resembles a Itliinichtltys 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 ami lateral 



view. ( )rbit four times in length of head, and 1.33 times in interorbital width 



