31. CYPRINID^ — CHROSOMUS. If; 3 



176. L,. exElicatida B. »fc G. 



JJody deep, compressed, tnpering to the caudul peduncle, which is 



very sleuder. Head small, short, conical. Mouth rather small, oblique, 



the upper lip on the level of the lower i^art of the pu})!!, the maxillary 



falling short of the eye. Preorbital short and deej) ; suborbital moderate. 



Eye rather lary:e, anterior, 4 in head. Scales rather large, 42 in front 



of dorsal. Dorsal fin rather small. Pectorals short. Anal high and 



long. Caudal well forked, its rudimental rays strong, about 10 in num 



ber. Color dark above, sides somewhat silvery. Scales with dark 



sjjecks. Ilead4|; depth 3^. D. 10; A. 12; scales 13-04-8 ; teeth 4-5 



or 5-5. L. 12 inches. Rivers of California. 



(Baird & Girard. Proc. Acad. Nat. Sci. Thila. 1854, 137 ; Girard, U. S. Pac. K. R. 

 Snrv. X, 241: Leuciscus exilicauda Gunther, vii, 248: Lavinia haniujus Girard, Proc. 

 Acad. Nat. Sci. Phila. 185G, 184; the same species.) 



VS.— CBIROSOMUS Raliuesquo, 1820. 



Red Minnows. 



(Rafiuesqne, Ichth. Oh. 47: tyi^e Luxilus eryihrof/aslcr T\.i\f.) 



Body moderately elongate, little compressed. Jaws normal; no bar 

 bel. Teeth 5-5 or 4-5, moderately hooked, with well-marked grinding 

 surface. Alimentary canal elongate, about twice as long as body ; peri- 

 toneum black. Scales very small. Lateral line sliort or wanting. Dor- 

 sal behind ventrals; anal basis short. Size small. Colors in spring 

 brilliant, {/f"'^, color; (jcuij.a^ body.) 

 * Sides <)(■ the body with two black stripes ; the upper ruuuiug from the upper angle 



of the opercle straight to the caudal, sometimes breaking up in spots behind; 



the lower broader, extending from the snout through the eye, curved down- 



Avard along the belly, and extending to the caudal, where it ends in a black 



spot (these strix)es I'aint in the female). 



177. C e»'ylSiros'asS«r Agassi/,. — Bed-hdUcd Dace, 



Body oblong, tapering each way from the middle, little compressed. 

 Head moderate, rather i)oiiited. IMouth moderate, terminal, oblitpie, 

 the jaws about equal. Fins rather small; the dorsal and anal high and 

 short; caudal long. Scales quite small, firndy attached, but not much 

 imbricated. Lateral line developed less than half the length of the 

 body. Color brownish olive, with a dusky dorsal line and often some 

 blackish spots; two black lateral bands as above described ; between 

 these a bright, silvery area. Belly below the lower band abruptly sil- 

 very. Females obscurely marked. Males in spring with the belly and 

 the interspace between the lateral bands bright scarlet; bases of the 

 vertical lius also scarlet. In high coloration the body is everywhere 



