Jordan and Evermann. — Fishes of North America. 181 



of papillip; lower lip moderate, divided by a broad notch, each lobe with 

 about G rows of papilL-e. Eye a little behind middle of head. Dorsal 

 siiorter and higher than in C. aniens. First raj- of dorsal twice height of 

 the last, its length greater than that of the base of the fin; caudal forked, 

 the lower lobe longest; pectorals long; anal high. Dusky above, pale 

 below. L. a foot. Utah lake, rather scarce, and not yet seen elsewhere. 

 This species resembles Chasmistes liorus. (fecundiis, fertile, in allusion to 

 its supposed abundance, but the "fecund" species which has made Utah 

 Lake the -"greatest sucker pond in the world" is really C. ardens.) 

 <:ilo!<lniuii<:fccini(his, CopE it Yarrow, Zoiil. Wheelor Survey, v, C78, 187G, Utah Lake; Jordan 



& Gilbert, Proc. U. S. Nat. Mu.s., 1880, 463; Jordan & Gilbert, Synopsis, 12H, 1883 ; Jordan, 



Bull. U. S. Fish Com., 1889, 31. (Typo, No. 1G930.) 



Subgenus HYPENTELIUM, Rafinesque. 



294. C.iTOSTOMUS \IGRICAXS, Le Sueur. 



(Hoo SrcKER; Stone Roller; Toter; Crawl-a -bottom; Hammer Head; Stone Lfoger; 



Hog Mollv.) 



D. 10 or 11 ; V. 9. Lat. line 48 to 55, 12 to 15 scales in a cross series. 

 Deph 4^ to 5 in length; head 4 to 4^. Eye rather small, 4i to 5 in head. 

 Head flattened above, transversely concave between orbits, the frontal 

 bono thick, broad, and short, the physiognomy being therefore peculiar. 

 Upper lip very thick, strongly paiiillose, with a broad free margin, which 

 has upward of 8 to 10 series of papilla} upon it; lower lip greatly devel- 

 oped, strongly papillose, considerably incised behind, but less so than in 

 Catostomus proper. Fontauolle shorter and smaller than in C. commcrsonii. 

 Pectoral fins unusually larger. Color olivaceous; sides with brassy 

 luster; belly white; back brown, with several dark cross blotches, irregu- 

 larly arranged, these becoming obsolete in old individuals; lower fins 

 dull red, with some dusky shading; young considerably variegated, the 

 sides spotted. Size large; length about 2 feet. New York to Minnesota 

 and Kansas, Arkansas, and the Carolinas; abundant in swift or rocky 

 streams, which it ascends to spawn; never found in muddy or warm 

 waters; less tenacious of life than the other species of Catostomun. 

 (nigricans, blackish.) 



OalosUyiiws iiif/ricans, Le Sueur, Jour. Ac. Nat. Scl. Phila., 1817, 102, Lake Erie; Guntiier, 

 Cat., VII, 17, 18G8; Jordan, I. c, 162,1878; Jordan & Gilbert, Synopsis, 130,1883. 



Hyjomi/zon nigricntis, Agassiz, Am. Jour. Sci. Arts, 1855, 205. 



Catnstoynus macuJosiis, Le Sueur, I. c, 103,1817, Pipe Creek, Maryland. 



nijpenleUmn macroptcnim, Eapinesque, Jour. Ac. Nat. Sci. Phila., i, 1817, 420, Ohio River. 



Qitoslntwis xanlhopus, Eafinesque, Ich. Oh., 57, 1S20, Ohio River. 



Catoslomiis plaiiiceps, CuviER & A'alenciennes, xvii, 450, 1844, 'Wabash River. 



CaloslontHan!(iricuiis eloiranns, JoRVAS, Ann. Lye. 'Nat. Hist. N. Y., 1877, 345, Etowah River, 

 Rome, Ga.; a brightly colored variety from the Alabama basin. 



OitoMomiis megaslomus, Kafinesque, Ich. Oh., 59, 1820; based on an incorrect drawing; belongs 

 hero if anywhere. 



2!).i. r.iTOSTOMUS UHOTHffiCUS, Thoburn. 



Head 5; depth 5. D. 11 ; A. 8 or 9. Scales 7-48-5, 19 rows in front of 

 dorsal. Allied to Catosiomus nigricann but with much smaller head, which 

 is less depressed between eyes. Head very small, flattened above but not 



