19G6 Bulletin //, United States National Museum. 



times in total length); distance from tip of snout to eye equals length of 

 eye, which is 4 in head. Vomerine teeth present; none on the palatines. 

 Body stout anteriorly, moderately compressed posteriorly, its height at 

 origin of first dorsal equal to its width at the same place, and contained 

 4 times in length of body without caudal; the least width of the caudal 

 peduncle less than i its height. The distance between the eyes equals \ 

 of their long diameter. The maxilla extends to the vertical through the 

 end of 'the anterior third of the orbit. The preoperculum has a short, 

 broad, rather blunt spine at its angle and a much smaller one on its lower 

 limb ; between these 2 the margin in some specimens is creiiulated, some- 

 times forming an additional blunt spine. The preoperciilar spines are all 

 hidden under the skin. The distance of the first dorsal from the snout is 

 contained 2f times in length of body without caudal; its longest spine i s 

 \ as long as the head ; the length of its base is contained 5 times in length 

 of body without caudal, 6 times in total length ; the length of the second 

 dorsal base is of total length. The length of the anal base is \ of length 

 without caudal. The length of the ventral is contained from 6 to 6 times 

 in the total length. The length of the pectoral is of length of body 

 without caudal. The colors have faded, but the ground color seems to be 

 plumbeous, with occasional blotches of darker; the fins are more or less 

 distinctly punctulated ; the first dorsal is darker than the body and has 

 a distinct white margin. (Bean.) Eastern Oregon, in the Columbia River 

 basin. Well distinguished from related species by its long anal. 

 Gilbert & Evermann have the following notes on this species : 

 Six small specimens from Mill Creek at Walla Walla (the type locality 

 of marginatus) agree with Bean's description and dift'er from all other 

 western specimens of Coitus which we have seen, in having but 3 soft rays 

 in the ventral fins. So far as can be ascertained from our very immature 

 specimens, marginatus strongly resembles perplex us, with which it agrees 

 in fin rays, naked skin, the incomplete lateral line, and the absence of the 

 palatine teeth. Coitus perplexus has constantly 4 soft rays in the ventral 

 fins, and other differences may appear when compared with adult speci- 

 mens. In our specimens of marginatus, the anus varies in position, being 

 sometimes nearer base of caudal fin than snout, sometimes nearer snout. 

 Twenty-two small specimens, collected by Bean & Woolman at Sand Point, 

 Idaho, are for the present referred to this species, though we are not cer- 

 tain that this identification is correct. The ventrals seem to be I, 3; but 

 the body is more or less covered with prickles, (marginatus, edged.) 



Uranidea marginata, BEAN, Proc. U. S. Nat. Mus. 1881, 26, Walla Walla. (Coll. Capt. 



Charles E. Bendire.) 

 Cottus marginatus, GILBERT & EVERMANN, Bull. TJ. S. Fish Comm. 1894, 204. 



2339. URANIDEA TENUIS, Evermann & Meek. 



Head 3f; depth 7; eye 4i in head; snout 4; V. 1, 3. D. VI-I, 17; A. 15; 

 vomer with teeth; palatines toothless. Head long, contracted from eyes 

 forward; snout rather long; body much compressed, very slender, greatest 

 width of caudal peduncle 2| in eye; least depth of same slightly greater 



