GEOLOGICAL SUEVEY OF THE TEEEITOEIES. 473 



muzzle. Caudal well forked. Eadii, D. 8 ; A. 7 ; lengtli of Lead a little 

 more than four times in length to basis of caudal ; depth five times in 

 the same ; length, 20 lines. 



Color Olivaceous, with a dark lateral band from end of muzzle, and 

 dark shades on tbe back. 



Four specimens from the Warm Springs, Utah. The species is named 

 in honor ot Campbell Carrington, zoologist of Dr. Hayden's expedition, 

 to whose zeal in the cause of science we are indebted for the materials 

 analyzed in this report, and that on the same subject in the Survey of 

 Wyoming, 1871. Collection No. 9. 



Apocope vulnerata, Cope, sp. nov. 



The head is broad and the muzzle wide and obtuse, not projecting 

 over the mouth. Barbels minute. The end of the maxillary bone does 

 not quite reach the marginal line of the orbit j orbit five times in head, 

 one and a half times in the interorbital space. Length of head one- 

 fourth, depth of body one-fifth length without caudal fin. Dorsal a 

 little behind line of origin of ventrals, nearer caudal fin than muzzle. 

 Itadii, D. 8; A. 7. Length, 24 lines. Scales small, 15-72-10. 



Color olive, with a broad dark band from end of muzzle to caudal 

 fin, paler above and below it ; belly yellow 5 a crimson spot on the chin. 



This species differs from A. carringtonii in the wider muzzle, smaller 

 scales, and greater development of the lateral line. In this species it is 

 continued to the end of the anal fin ; in the type of the genus it scarcely 

 extends to the dorsal. Collection No. 1. 



From Logan, Utah 5 discovered by Cam. Carrington. 



Ehinichthys maxillosus, Cope, (Proc. Acad. Nat. Sci., Phila., 1864, 

 278.) 

 Crow Creek ; Grass Creek, Idaho. 



TiGOMA RHINICHTHYOIDES, CopC, Sp. nOV. 



Size small 5 form elongate. Head 4.3 times in length without caudal 

 fin; depth, 5.2 times in same. Muzzle obtuse, not i)rojecting; mouth 

 inferior horizontal, maxillary not reaching line of orbit. Head nearly 

 four times longer than diameter of orbit, which equals length of muzzle, 

 and is 1.5 times interorbital space. Teeth, 4.2-2.4. Scales, 12-C7-12, 

 lateral line with occasional interruptions at the posterior x)art. Dorsal 

 fin behind line of ventrals, nearer basis of caudal fin than end of muzzle. 

 .Length, 24 lines. 



Olive-brown above, yellow below; abroad brown lateral band and 

 longitudinal blackish line on the thoracic region on each side. The me- 

 dian band is darker spotted, and there are blackish si)ots on the dorsal 

 region. Head black above ; chin red. 



The upj)er lip of this species is separated by a fold, but the species 

 has n general resemblance to those of RMnichthys. 



From Logan, Utah. Collection No. 2. 



Protopoeus, Cope, g€7i. nov. 



Teeth raptorial; outer row, 4-4; no grinding surface; no barbels; 

 upper lij) separated by a fold. Lateral line represented only by a short 

 anterior series of pores. 



Tliis genus is related to Tigoma, as Apocojye is to Ceratlchthys, 



Protoporus domninus. Cope, sp. nov. 



Form rather stout, front (convex, muzzle obtuse, month horizontal, end 

 of maxilhiry not quite attaining orbit. Scales, 0-50-0. Lateral line not 



