Jordan and Evermann. Fishes of North America. 325 



from side of upper jaw to opercle. Lining of shoulder girdle dusky; 

 fins without definite marking, the upper somewhat dusky. Length 6 

 inches. Stuart Lake, headwaters of Fraser River, British Columbia, and 

 Lake Pencl d'Oreille, Idaho. (Named for its discoverer, Ashdown H. 

 Green, of Victoria.) 



C,i,'x!iis<jre<>)ri, JORDAN, Proc. U. S. Nat. Mus., 1893, 313, Stuart's Lake, British Columbia. 

 (Typo, No. 44454.) GILBERT & EVERMANN, Investigations in Columbia River Basin, 44, 

 1894. 



641. COUESITJS ADUSTUS, Woolman. 



Head 4J ; depth 4; eye moderate, 3& to 4; snout 3i to 3. D. 8; A. 

 7; scales 13-58-8, 27 before dorsal; teeth 2, 4-4, 2. Body moderately 

 elongate, compressed, the back a little elevated, the anterior profile 

 rather convex. Snout rather long, slightly pointed; mouth low, ter- 

 minal, oblique, the jaws subequal, the maxillary opposite posterior nos- 

 tril ; barbel evident in young, inconspicuous in adult, its position not 

 quite- terminal. Interorbital space broad, flattish ; eye moderate; preor- 

 bital broad. Scales small, those before dorsal and on belly smallest; 

 lateral line decurved. Dorsal inserted over or a little behind ventrals, the 

 latter reaching the vent. Olivaceous, dusky above; sides silvery, a nar- 

 row plumbeous lateral band from snout to caudal, ending in a small black 

 caudal spot which is obsolete in adult ; fins all plain. Length 4 inches. 

 Rio de los Conchos, Chihuahua; three specimens known. The smallest 

 of these is deeper in body, more silvery, and with the barbel more 

 conspicuous, (adustus, scorched.) 



Coucsius atlHshit, WOOLMAN, Bull. U. S. Fish Comm., xiv, 1894, 57, May 3, 1894, Rio de los 

 Conchos, Chihuahua." (Coll. Woolman & Cox.) 



132. PLATYGOBIO, Gill. 



Platygobio, GILL, Trans. Amer. Phil. Soc. Phila., v, 12, 178, 1863, (communis). 



Body rather elongate, somewhat compressed. Head rather short, more 

 or less broad or depressed above; mouth normal, rather large, subter- 

 minal, with a well-developed barbel at its angle, at the extremity of the 

 maxillary. Scales large. Lateral line continuous. Dorsal inserted ante- 

 riorly, rather in front of ventrals. Teeth 2, 4-4, 2, with rather narrow 

 grinding surface. Size large ; males without nuptial pigments or bright 

 colors. (TrAarvf, broad; Gobio, a gudgeon.) 



a. Anterior profile nowhere concave, the head not specially depressed above; eye moderate, 

 4% in head. PHYSIGNATHUS, 642. 



o. Anterior profile more or less concave above the depressed and flattened head. 



6. Eye small, 4 to 6 in head in adult; snout not tuberculate in males, so far as known; 



size large. GRACILIS, 543. 



66. Eye large, 3% in head; males with the snout tuberculate; size small. PALLIDUS, 544. 



542. PLATTGOBIO PHYSIGNATHUS (Cope). 



Head 4 ; depth 4f ; eye 4f in head, 1-J- in snout, which is 3 in head. 

 D. 8; A. 8, scales 6-48-5, 20 before dorsal; teeth 2, 4-4, 2, with distinct 

 grinding surface. Body slender, the caudal peduncle stout. Head 

 shorter, narrower, blunter, and less depressed than in P. gracilis. Dorsal 



