174 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



228. C. gibbosa (Grd.) J. &. G. 



Body extremely deep and compressed, the back much arched, espe- 

 peeially anteriorly. Head short, blunt and deep, the profile continuous 

 from the snout to the occiput without angle. Muzzle short and blunt. 

 Kyi- small, 3\ ! in head. Mouth quite small, very oblique, the upper lip 

 on the level of the pupil, the maxillary not extending quite to the orbit. 

 Scales large, the lateral line very much decurved. Dorsal fin well be- 

 hind vent nils; lower fins rather large, the pectorals nearly reaching 

 vent nils, the latter to vent. Bluish above; sides silvery; lower fins 

 milky ; a more or less distinct black spot between the rauii of the lower 

 jaw. Males tuberculate in spring. Head 4; depth 2|. D. 8; A. 9; 

 scales 6-31-3; teeth 4-4. L. '2\ inches. Eio Grande. 



(MoniuiHt uilibHsa Girard, Proc. Acad. Nat, Sci. Pliila. 1856, '201 : Cyprinella complanata 

 Jordan, Bull. Hayden's Geol. Snrv. Terr, iv, 3,6(35,1878.) 



229. C. forbesi Jordan. Forbes's Red-fish. 



Body oblong, elevated, strongly compressed, the back arched. Caudal 

 peduncle rather slender. Head stout and deep, its upper outline de- 

 pressed, the nape elevated, forming an angle, so that the profile is some- 

 what concave. Mouth rather large, quite oblique, the lower jaw in- 

 eluded. Eye small, 4 in head. Lateral line strongly decurved. Thir- 

 teen scales in front of dorsal. Males profusely tuberculate in spring. 

 Colors in life brilliant, steel-blue ; the lower region silvery ; the belly 

 orange-red in the males ; a conspicuous violet-colored crescent behind 

 the shoulders, followed by a crimson crescent; fins reddish, the anal 

 and caudal blood-red ; chin without black spot. Head 3r; ; depth 3. 

 I ). 7 ; A. 8 ; scales C-35-2 ; teeth 4-4. L. 2* inches. Streams of South- 

 ern Illinois. Very near the preceding, but distinguished by the form of 

 the profile and the coloration. 



((',/, ,,-in, ll.i /,///.; Jordan, Bull. Ills. Slat.- I.al>. Nar. Hist, ii, 57, 187>\) 



2:tO, C. l<'02BBGia (Grd.) J. &. G. 



P.ody rather short and deep, compressed, with long caudal peduncle. 

 Head moderate, the snout subeonical, moderately pointed. Month 

 rather lar:e, oblique, the maxillary scarcely extending to the orbit. 

 I'.ye modeiate. I in head. Lateral line decurved. Head \[: depth .">A. 

 I).!*: A. !; Lai. 1. 10. L. :; \ inches. Rivers of Texas and Northern 



.Mexico. ( (Jii-iii-il.) 



(Miiiiiiiim Ii, ,IIIIHI, iniiipJninilti, ;md fritjidn Girard, PrOC. Acad. Nat. Sci. Phila. 1856, 

 199,200.) 



