4G TKLEOSTKI : EVENTOGNATHI. — XII. 



42. CYCLEPTUS Kafmcsquo. ((cO^Xor, rr)iin(l ; XfTrrdj, slender ; 

 according to Kafuiesqiie, small round mouth.) 



74. C. elongatus (Le Sueur). Black House. Gourd-skkd 

 Sucker. Missoi hi Suckkk. Head small, short and slenilcr, 

 rounded above; opercles small; eye small; lins large. Color 

 blacki.sh; ^ in spring covered with small tubercles. Head 7; 

 depth -U; D. .'to ; scales !)-r>(;-7. J.. 'J^ feet. Miss, valley, rather 

 common in larger streams. 



43. CATOSTOMUS Le Sueur. FiXE-scALED Suckers. 



(/cdro), inferior ; (nofia, mouth.) 



a. Scales very small, much reduced and cruwded anteriorly, about 100 in the 

 lateral line. (Catostumus.) 



75. C. catostomuB (Forster). Noutiiern Sucker. Upper lip 

 thin, with 2 to 4 rows of papilla*; snout long, overhanging the large 

 mouth. ]Males in spring profusely tuberculate and with a broad 

 rosy lateral band. Great Lakes to Alaska, very abundant X. 



aa. Scales larper, but small and crowded forwards, about 65 iu the lateral 

 line. {Di'Ciiftylus l{alines(|ue.) 



7G. C. teres (.Mitchill). Common SucK^:R. White Sucker. 

 Upper lip thin, with '2 or .T rows of j)a[)ilhc ; snout shorter than in 

 the preceding, the mouth smaller. Color olivaceous, dusky above ; 

 sides rosy in spring. Head 4}; depth A\. D. 12. Scales 10-64 

 to 70-9. L. 18. Canada to Montana and Fla. ; commonest of the 

 Suckers, and extremely variable. (Lat., terete.) 



ana. Scales Inr^je, scarcely crowded anteriorly, 48 to 55 in the lateral line. 

 (Ililfti nti limn lvntines(|ue.) 



7 7. C. nigricans Le Sueur. HoG Sucker. Stoxe Roller. 

 Stone Lu«(;er. Stone Toter. Hammer-he.vd. Cicawl-a- 

 lioTTOM. Hog Molly. Hog Mullet. Head flattened above, 

 concave between eyes ; the frontal bone thick, broad and short ; 

 eyes sm.all, placed high; upper lip thick, with 8 to 10 rows of 

 papilhr ; lower fins large. Color brassy olive, the back with dark 

 cros.H-blotches, disappearing with age; lower fins red. Head 4; 

 depth 4 J. 1). 11. Lat. 1. 48 to 55. L. 2 foct. Lakes and clear 

 streams, W. X. Y. to .Via. and Kans. (Lat, blackish.) 



44. ERIMYZON Jdrdan. (ipt, an intensive particle; 

 fiv(u>, to suck.) 



78. E. sucetta (Lacefjcde). Ciiun Sucker. Sweet Sucker. 

 Creek-kisii. Scales crowded, deeper than long; mandible obli(iue. 

 Color dusky, brassy below ; young with black bands or bars and 

 pale streaks. Head 4; depth 2j in adult; spring males witli 6 

 tul^rcles on snout. D. 11 to \'i. Scales 4.*J-1.') in the northern 

 form, vor. oblongru Mitchill (the true sucetta, southern, with scales 



