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



Fig. 47. Black-nosed Dace. 



Rhinichthys atronasus (Mitch. J. (From Forbes and Richardson.) 



darker; a dark lateral band bordered below with a light streak; a 

 distinct blackish spot at base of dorsal behind. 



Length 2 to 3 inches. 



This species ranges from Minnesota to New England, Virginia and 

 Alabama. 



Bull Creek, Zion City, Illinois; Pettibone Creek, North Chicago, 

 Illinois; Ravine, Glencoe, Illinois. 



Genus Cypriiius (Artedi) Linnaeus. 



The Carps. 



Body robust, compressed, the dorsal region elevated; mouth 

 rather small, with 4 barbels; snout blunt, rounded; pharyngeal teeth 

 molar-like, 1,1, t,-^, i, i in number; scales large; dorsal fin long, its 

 first rays forming a strong serrated spine; anal fin with similar spine; 

 lateral line complete. 



Cyprinus carpio Linnaeus. Carp; German Carp. 



Head 3 to 4; depth 2.7 to 7,. 7,; D. i, 20; A. 1.5; scales 38. 



Body robust anteriorly, more or less compressed; mouth terminal, 

 slightly oblique; interorbital space nearly flat, 2.3 to 2.7 in head; 

 eye 5.5 to 6.8; snout 2.6 to ^.t,; maxillary not reaching past anterior 

 nostril, ;^.;^ to 3.9 in head; two pairs of maxillary barbels, the upper 

 shorter, the lower longer than the eye; dorsal and anal each with a 

 strong posteriorly serrated spine; insertion of dorsal slightly in front 

 of ventrals. 



Color olivaceous, upper parts dusky to bluish; lower parts of 

 sides and belly more or less yellowish. 



There are three varieties of carp. Those covered with scales are 

 known as Scale Carp, those partially covered with scales are Mirror 

 Carp, those without scales are Leather Carp. 



Length, 2 feet or more. * 



