222 FISHES. 



Var. atromacu/ata, (Grd.) has the neck and throat 

 scaly. 



2. B. effulgens, (Girard) Cope. " LITTLE JOHNNY." 

 SLIM DARTER. Paler and more distinctly tessellated; 

 brownish yellow; upper surface dotted with brown, the 

 spots forming a few dark bars on back; a dark line from 

 eye to snout; and sometimes a bar below eye; smaller 

 and slenderer than the preceding, with smaller fins; eye 

 as long as the narrow, pointed snout; cheeks, opercles, 

 neck and throat naked; D. IX 12; A. I, 8 to I, 10; 

 lat. 1. 45. E. U. S., abundant, west of the Alleganies. 



** Dorsal with 10 spines ; anal as large as soft dorsal. (Cottogaster, 

 Putnam.) 



3. B. tessellation, Thompson, nee DeK. VERMONT 

 DARTER. L. Champlain. 



8. ETHEOSTOMA, Rafinesque. BLACK-SIDED DARTERS. 



< Hadropterus, Ag. 



> Diplesion and Alvordius, Grd. 



1. E. blennioides, Kirtland (nee. Raf.) BLACK-SIDED 

 DARTER. BLENNY DARTER. Head long, pointed, 4 in 

 length; depth 5 to 5; belly with a series of caducous 

 plates along the middle line (shed at some seasons.) 

 Straw yellow, with dark tessellations and about seven 

 large blotches along the sides, partly confluent, thus 

 forming a moniliform band; D. XIII, to XV 12; A. II, 



9. Ohio Valley and Great Lakes; one of the most 

 curious and elegant of all the Darters. (? E. macro- 

 cephalum, Cope.) (Alvordius and Hadropterus macu- 

 latus, Grd.) 



2. E. peltatum, Stauffer. SHIELDED DARTER. Head 

 shorter; sides with broad, brownish shades; ventral 

 shields larger; D. XII 13; A. II, 9; lat. 1. 53. Penn.j 

 probably a variety of the preceding. 



