288 Bulletin 47, United States National Museum. 



compressed. Head rather short, thick, bluntly rounded. Mouth moder- 

 ate, slightly oblique, the jaws about equal. Eye large, about equal to 

 muzzle, a little less than the broad interorbital space. 15 scales before 

 dorsal ; dorsal fin high, directly over ventrals. Olivaceous ; scales dark- 

 edged ; a broad plumbeous lateral band ; lips black ; a dark caudal spot; 

 a dark vertebral line ; anal region dusted with dark points ; cheeks and 

 belly silvery ; males with the dorsal, anal, caudal, and pectorals mostly 

 rosy red; iris, top of head, and tip of snout red. Length 2| inches. Low- 

 land streams of the Gulf States from the Ogeechee to the Mississippi; 

 the commonest species in the Okeefinokee swamps, (roseus, rosy.) 



Luxilus roseus, JORDAN, Bull. U. S. Nat. Mus., x, 61, 1877, Notalbany River, near Tickfaw, 



Louisiana. (Type No. 17831. Coll. Bean.) 

 Minnilus roseus, JORDAN & GILBERT, Synopsis, 189, 1883. 



470. NOTROP1S CHALYBJETJS (Cope). 



Head3f; depth 5; eye large, 3 in head. D.8; A. 8; scales 6-33-3 ; teeth 

 2, 4-4, 2. Body moderately elongate, the back a little elevated, with slen- 

 der caudal peduncle. Head flat above, rather narrow; muzzle rather 

 pointed. Mouth very oblique, the lower jaw the longer. Lateral line 

 decurved. Dorsal inserted behind ventrals ; dorsal and anal very short 

 and high ; pectorals and ventrals short ; 16 to 18 scales in front of dorsal. 

 Color dark ; a broad, black, shining lateral band from muzzle to base of 

 caudal ; a light band above it on the muzzle ; belly straw-colored, bright 

 orange in spring males ; fins plain ; a small dark spot at base of caudal; 

 a dark streak along base of anal. Length 2 inches. Delaware River to 

 the Ogeechee River; in coastwise streams and swamps, rather scarce. 

 Strongly resembles N. anogenus, the teeth, and scales of back different. 

 Zof, iron-colored.) 



Hybopsis chalybiKus, COPE, Cypr. Penn., 383, 1866, Schuylkill River, Pennsylvania. 

 Minnilus chalybseus, JORDAN & GILBERT, Synopsis, 191, 1883. 



471. NOTROPIS CHROSOMUS (Jordan). 



Head 4i; depth 5 ; eye 3, as long as muzzle. D. 8; A. 8; scales 5-37-3; 

 teeth 2, 4-4, 2. Form chubby, little compressed, the back somewhat ele- 

 vated; caudal peduncle not much contracted. Head rather large, rounded 

 above, the snout somewhat pointed. Mouth moderate, oblique, the upper 

 jaw the longer. Scales everywhere large, 16 before dorsal. Lateral line 

 little decurved. Scales hyaline green in life, with blue reflections; belly 

 clear silvery ; a scarlet bar across dorsal, anal, and base of caudal; a nar- 

 row scarlet band from upper edge of opercles straight to caudal; below 

 this a silvery band; a row of black dots along lateral line, forming a 

 small, distinct spot at base of caudal; top of head and vertebral line 

 golden. Snout tuberculate in males. Length 2 inches. Alabama Basin; 

 very abundant in clear streams and outlets of springs. A graceful little 

 fish, (chrosomus, colored body, name of a related genus.) 



Hybopsis chrosomus, JORDAN, Ann. Lye. Nat. Hist. N. Y., 1876, 333, Etowah River, etc., Rome, 



Georgia. (Type, No. 17881. Coll. Jordan & Gilbert.) 

 Hydrophlox chrosomm, JORDAN & BRAYTON, I. c., 49, 1878. 

 Minnilus chrosomus, JORDAN & GILBERT, Synopsis, 191, 1883. 



