17G CONTKI15UTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



* Teeth 1. 1-1,1. 



ft. Teeih whh edges more or less serrate or erenate (usually without grinding sur- 



laee). (('itiiriiii'Ilit (urard. *) 



c. Dorsal iiu \\iiliont conspicuous black blotch on its upper posterior rays. 

 d. No conspicuous black spot at base of caudal. 



t. Body very deep, compressed, the depth forming about a third of 

 the length. 



235. C. iimbrosa (Grd.) J. & G. 



Body short, the back very much arched. Caudal peduncle robust. 

 Head short and deep, bluntish. Eye large, 4 in head. Mouth moderate, 

 quite oblique, the jaws about equal, the maxillary nearly reaching the 

 front of the eye ; the upper lip on the level of the pupil. Lateral line 

 decurved. Fins rather low. Coloration plain in spirits. Ilead 4; 

 depths. D.8; A. 9 ; scales 8-42-5. L. 3^ inches. Arkansas, etc. (Gi- 

 rard.) 



(CiijirhirUn innbrosa Girurd, Proc. Acad. Nat. Sci. Phila. 1850, 197, and U. S. Pac. R. R. 

 Snrv. x,2G(i.) 



236. C. bitbaQiiia (B. & G.) J. & G. 



Form of the preceding, but the caudal peduncle slender. Eye large, 

 3J in head. Jaws equal. Lateral line decurved. This species appears 

 to differ from the preceding chiefly in its larger scales. Head 4 ; depth 

 3. D. 8; A. 9 j scales 6-36-3. L. 3 inches. Bed lliver, Arkansas. (Gi- 

 rard.) 



(Lciidscits lubnJinus B. & G. Proc. Acad. Nat. Sci. Phila. l 1 -."^, 391 : Cii]-ini-Uii lula- 

 liiiit Cirard. I'. S. 1'ae. h'. K'. Surv. x, 2U5 : C>Ji>rlndla brrkicithi Grd. Proc. Acad. Nat. 

 Sri. 1'hila. l-ri;, -JU7.) 



237. C. ^eiiiiiisoiii (Grd.) J. & G 



I'.ody short and compressed, the back arched, but less so than in the 

 preceding. Head small. Caudal pediiM^e moderate. Maxillary reach- 

 ing nearly to eye. Eye moderate, :>A in head. Yentrals in advance of 

 dorsal. Coloration plain in spirits. ]H>ad \\; depth 3. D.8; A. !>; 

 Lat. 1. .'51. L. :M inches, ('ottonwood Creek, Ttah. 



ee. Li'dy .slendi rer, the depth ^^-1} in lengtli. 



23N. <'. suavis(Crd.).T. & G. 



llndy short, compressed, the back slightly arched. Month oblique. 

 Eye 4 in head. Maxillary not quite reaching eye. Scales moderate 

 Lateral line gently curved. Coloration plain in spirits. " By its gen- 

 eral form and appearance this species establishes a transition between 



tirard, 1'ro.-. .\.- :i d. Nat. Soi. 1'liila. i-:.i;, r.n; : t\p.- f., ,i< ixcns bubaUnus Buiril & 



(Jirard. (I>atin ri//irinrll<i, a litilr earp. ) 



