80 - 
Family XXI. CATOSTOMIDA. (THE Suckers.) 
Genus 54. PrLacopHarynx, Cope. 
BiG-JAWED SUCKERS. 
99. Placopharynx carinatus, Cope. 
This species has not actually occurred in our personal collections 
from I[lhnois, but has been received by Dr. Jordan from the Illinois 
River, and is said by fishermen to be rather common in the Wabash, 
Its resemblances, to Moxostoma are so strong that it would very 
probably be passed by collectors as belonging to that genus. 
Genus 55. Moxostoma, Raf. 
Rep Horse. 
100. Moxostoma aureolum, Le S. 
Distribution lke that of the following species, from which it is, in 
my opinion, but doubtfully distinct. Less common in Illinois than 
macrolepsdotum. 
101. Moxostoma macrolepidotum, Le Sueur.—Common Rep Horse; 
Mu.uet; WaHitE Sucker; LARGE-SCALED SUCKER. . 
(Bul. II, 68 and 64; Myxostoma macrolepidotum, Myzxostoma 
velatum.) 
Very abundant everywhere in lakes, rivers, and smaller streams. 
It inhabits Lake Michigan and the smaller lakes in Northern IlIli- 
nois, and is not less common to the southward. Where the com- 
mon sucker is not known its name is appropriated to this species, 
the name of ‘“‘red horse” being rarely heard in Southern Illinois. 
102. Moxostoma carpio, Val.—Care Moutuer. 
Said by Dr. Jordan to occur in the Great Lakes. Not positively 
identified by me in Illinois, the common lake mullet of South 
Chicago not being clearly different, to my mind, from Moxostoma 
macrolepidotum. 
Genus 56. Muinyrrema, Jordan. 
SPoTTED SUCKERS. 
103. Minytrema melanops, Raf.—Srorrep Munuet ; Stripep Sucker. 
Moderately common in streams throughout the State. 
Genus 57. Ermmtyzon, Jordan. 
104. Hrimyzon sucetta, Lac.—Creex-Fisu ; CHUB-SUCKER. 
Everywhere abundant in streams and lakes, ascending creeks in 
spring. Occurs in our collections from McHenry to Union county. 
