FIELD AND FOREST. 39 



Description of a New Species of Fish from the 

 Monntains of Arizona. 



Apocope couesi, sp. no v. At the first glance it might be supposed 

 that this species was simply a variety of Rhinichthys henshavii, Cope. 

 But a careful study of the specimens has proved it to be entirely differ- 

 ent, and new to science. 



Description. — Form elongate but broader than R. henshavii, with 

 overhanging obtuse but broader muzzle ; scales larger. Depth enters 

 the total length including the candal fin 5.75 to 6.25 times, the head en- 

 tering 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 the end of snout. Ventral fins reach nearly to anal, and are 

 nearly reached by the pectorals. Dorsal fin originates behind the base 

 of the ventrals. D. 1-8; A. 1-7; V. 7; P. 12. Scales, 14 — 67 — 12. 



Color whitish yellow, with bluish black spots on black, and sides in- 

 creasing in intensity toward the occiput ; no dark stripe on sides. In- 

 ferior fins yellowish. 



This species is from the streams of the White Mountains, Arizona, 

 and is reported to be very numerous by Mr. H. W. Henshaw, of Lt. 

 Wheelers' Expedition, who discovered and colle6ted it. 



Named in honor of Dr. Elliot Coues, U. S. A., the distinguished 

 naturalist of the " Northern Boundary Survey," to whom I am indebt- 

 ed for many and valuable favors in the prosecution of my Zoolological 

 studies. 



H. C. Yarrow 



Oaks of the Potomac Side. 



The oak has been justly regarded in all ages and countries as the 

 emblem of strength and durability. Whatever may be the special 

 advantages possessed over it by any other tree, there is none which 

 can be called its peer when all its good qualities are colle6lively con- 

 sidered. 



Perhaps there is no spot on the continent which has a better claim 

 to style itself the home of the oak than the valley of the Potomac 

 within a radius of ten miles from the nation's capital. For although 

 the noble Live Oak fails to reach us from the south, and the grand 



