192 CONTEIBUTIOXS TO NORTH AMERICAN ICHTHYOLOGY IV. 



base of caudal ; top of head and vertebral line golden. Snout tubercu- 

 late in males. Head 4^- ; depth 5. D. 8 ; A. 8 ; scales 5-37-3 ; teeth 

 2, 4-4, 2. L. 2 J inches. Alabama Basin ; very abundant in clear streams. 

 A graceful little fish. 



{Rybopsis chrosomns Jordan, Ann. Lye. Nat. Hist. N. Y. 1876, 333: Rydrophlox chrosomus 

 Jordan & Brayton, 1. c. 49.) 



SYl. M. xsenoceplialus Jordan. 



Body rather short and deep, with thick caudal peduncle ; back wide, 

 not elevated. Head large, flattish and broad above, the snout rounded. 

 Mouth large, oblique, the jaws nearly equal. Eye very large, 2^ in 

 head. Lateral line somewhat decurved. Thirteen scales in front of the 

 dorsal. Dorsal fin slightly behind ventrals. Dark olivaceous above, the 

 scales beiug extensively dark -edged ; a dark band along the sides of the 

 caudal peduncle, which vanishes in black points along the sides of the 

 body, reappearing on the head and passing around the snout ; a dusky 

 blotch at base of caudal. Males without red markings, the snout swollen 

 and tuberculate iu the spring. Head 4> ; depth 5. D. 8; A. 7; scales 

 5-38-3 ; teeth 2, 4-4, 2. L. 2f inches. Georgia to Mississippi. 

 {Hyhopsis xwnocephalus Jordan, Ann. Lye. Nat. Hist. N. Y. 1876, 334.) 



212. JW. pPunibeoBtis (Cope) J. & G. 



Body oblong, compressed, the back somewhat arched. Mouth oblique, 

 the lower jaw slightly longer than the upper. Fins short. Eye large, 

 2f in head. Silvery, with bluish reflection ; top of head dusky ; a dark 

 spot at base of caudal. Head 4i ; depth 4|. D. 8 ; A. 9 ; scales G-39-3 ; 

 teeth 2, 4-4, 2. L. 3 inches. Saginaw River. {Cope.) 



(Alburnops plumheolus Cope, Proc. Acad. Nat. Sei. Phila. 1864, 282.) 



273. M. lacertosMS (Cope) J. & G. 



Body stout. Head broad and deep. Mouth wide, the lower jaw pro- 

 jecting. Eye large, 3;^ in head, equal to muzzle and to width of inter- 

 orbital space. Maxillary not reaching the line of the orbit. Scales 

 large, only 5 above the lateral line. Silvery ; dorsal region dusky ; no 

 red. Head 4. Teeth 2, 4-4, 2. L. 4J inches. Headwaters of Tennes- 

 see Elver. {Cope.) 



(Hyhopsis lacertosus Cope, Jouru. Acad. Nat. Sci. Phila. 1868, 232.) 



274. m. sSfiiimardi (Grd.) Jor. & Gilb. 



Body moderately elongate. Snout subconical, not strongly decurved. 

 Mouth rather large, oblique, the lower jaw included, maxillary reach- 

 ing front of eye, upper lip above the level of the lower border of eye. 

 Dorsal over ventrals. Eye large, 34 in head. Olivaceous j sides silvery j 



