696 



ZOOLOGY FISHES. 



verse series. First dorsal ray half as far from base of caudal as from end 

 of muzzle. Length of head 4.66 times in total, a little less than four times 

 to basis of caudal fin. Orbit large, 3.2 times in length of head and 1.6 

 times in interorbital width. Mandible projecting a little beyond premaxil- 

 lary ; one external series of teeth in both jaws larger than the others. 



Total length, O m .0595 ; length to anal fin, O m .0335 ; length to basis of 

 ventral fin, (T.027; length of head, O m .0138; width of head at pterotics, 

 O ra .008. Color olive-gray; the scales with ocher borders; fins yellow, 

 broadly edged with crimson. 



Numerous specimens from the Platte River, near Denver, Colo. No. 

 65 a species with large scales. 



The plate affords views of this fish from the side, and the upper and 

 lower aspects of the head. 



PERCOMORPHI. 



URANIDEA, De Kay. 



URANIDEA VHEELERI, Cope. 



PLATE XXXII, FIGS. 3, 3a, 36. 



Uranidea wheeleri, COPE, Proc. Am. Phil. Soc. Phila., 1874, 138. Id., Rep. Plagop. & 

 Ichtby. Utah, 1874, 12. 



The only Physoclystous or spinous-rayed fish as yet found in the 

 Great Basin of Utah. 



Radial formula: Br. VI; D. VII. 17; A. 12; P. 15, all simple. The 

 head is depressed and enters the length minus the caudal fin three times. 

 Orbit large, one-fifth length of head and twice the width of the frontal 

 interspace. Greatest depth (at first anal ray) 6.75 times in length, less 

 caudal fin. Anal commencing opposite the third ray of the second dorsal. 

 Lateral line deflexed opposite last ray of second dorsal. The recurved pre- 



