276 Field Museum of Natural History — Zoology, Vol. VII. 



slightly nearer tip of snout than base of caudal; lateral line complete; 

 13 to 15 scales in a series before dorsal fin. 



Color pale olivaceous above, silvery below; lateral band developed 

 posteriorly; no caudal spot. 



Length 3 to 4 inches. 



This small minnow ranges from Michigan to Florida and Kansas 



Kankakee, Illinois. 



Genus Pheiiacobius Cope. 



Sucker-mouthed Minnows. 



Body elongate, little compressed, mouth inferior, the lower lip 

 thin in the middle and enlarged into a fleshy lobe on each side, upper 

 jaw protractile, no barbel; teeth 4-4, hooked and with grinding sur- 

 face; intestine short, peritoneum silvery; dorsal rays 8, anal 7, scales 

 45 to 60; lateral line complete. 



Fig. 41. Sucker-mouthed Minnow. 



Phenacobius mirabilis (Girard). (From Forbes and Richardson.) 



Phenacobius mirabilis (Girard). Sucker-mouthed Minnow. 



Head 3.9 to 4.5; depth 4.7 to 5.5; D. 8; A. 7 ; scales 43 to 51. 



Body moderately slender; head short., blunt anteriorly; mouth 

 small ; inferior maxillary not reaching eye, its length 3.7 to 4.3 in head ; 

 upper jaw provided with a fleshy lip which is continuous on each side 

 with the lower lip, forming rather prominent laterally projecting 

 lobes, these separated by a frenum; snout 2.3 to 2.6 in head; diameter 

 of eye 3.6 to 4.8; teeth hooked, occasionally with narrow grinding 

 surface; alimentary canal equal to length of head and body; peri- 

 toneum plain silvery; lateral line complete. 



Color pale olivaceous; a silvery lateral band ending in a conspic- 

 uous caudal spot; fins all plain. 



Length 3^ inches. 



This fish is found from Northern Illinois to Iowa and Arkansas. 



Hickory Creek, Marley, Illinois. 



