ETHEOSTOMATID^. — LXXXIX. 221 



tioii nearly that of A. asjyro ; scales quite small; 

 D. XV-13; A. II, 11; lat. 1. 77. Headwaters of Ohio 

 River. 



■i. A. phoxocephalus, (Nelson) Go^q & Jordan. Sharp- 

 nosed Darter. Body slender, compressed; head 4 in 

 length, very long, narrow and tapering, the snout very 

 acuminate, scarcely longer than eye; mouth large, with 

 the jaws about equal; cheeks, opercles and neck with 

 small scales; coloration as in the other species except 

 that the spots on the sides are nearly square and rather 

 small; a small black spot at the end of the lateral line; 

 D. XII — 13; A. II, 9; lat. 1. 68. Indiana to Tennessee 

 and Kansas, a singular species known at once by the 

 coloration and the form of the head. 



5. ERICOSMA, Jordan. Gilded Darters. 



1. E. evides, Jordan & Copeland. Body rather short 

 and deep; head heavy, 4^ in length; mouth moderate, 

 the lower jaw the shorter; cheeks, neck above, and throat 

 naked; opercles with a few rather large scales; body with 

 about seven broad transverse bars, black in the female, 

 of a dark rich metallic blue-green in the male, the inter- 

 spaces between the bars creamy in the female, bronze 

 red in the male; belly chiefly yellow; cheeks orange red; 

 dorsal orange with a black spot; vertical fins chiefly 

 orange; anal somewhat dusky; ventrals blue -black; 

 males with the ventral and anal fins tuberculate in the 

 Spring; D. XI — 10; A. II, 9. A most beautiful species, 

 as yet known only from the rapids of AYhite River, above 

 Indianapolis. {^E. nigrofasciatum^ Ed. I., not of Agassiz.) 



6. HADROPTERUS, Agassiz. Crawl-a-bottoms. 



[Hi/pohomus^ Cope.) 

 1. H. aurantiacus, (Cope) Jordan. Orange Darter. 



