ETHEOSTOMATID^. LXXXIX. 225 



12. NANOSTOMA, Putnam. ZONED DARTERS. 

 1. N. zonalis, (Cope) Jor. ZONED DARTER. Oliv- 

 aceous, golden below; six dark brown quadrate spots 

 along the back, connected by alternating spots with a 

 brown lateral band from which eight narrow bands en- 

 circle the belly; lower fins yellow with brown spots; 

 spinous dorsal with a crimson band; a series of crimson 

 spots on base of soft dorsal ; black spot on opercle, occi- 

 put and base of pectorals; black bars downward from 

 eye and forward; D. XI 12; A. II, 7; lat. 1. 52. Indiana 

 to Tenn. 



13. NOTHONOTUS, Agassiz. BLUE-BREASTED DARTERS. 



1. N. maculatus, (Kirt.) Ag. TROUT DARTER. Body 

 moderately elongate, deep and compressed, head 4 in 

 length; depth 4f ; head long and rather pointed; mouth 

 pretty large; jaws equal; dorsal fin elevated, the longest 

 rays reaching caudal ; olive, sides with rather large spots 

 of brilliant carmine; vertical fins more or less barred 

 with red and white; D. XII, 13; A. II, 8; lat. 1. 60. 

 Mahoning River, Ohio, a rare and handsome species. 



2. N. camurus, (Cope) Jor. BLUE-BREASTED DARTER. 

 Body stout, head short, with the muzzle abruptly deeurved, 

 so that the upper jaw is the longer, and the mouth some- 

 what inferior; dark olive; head blackish above; breast 

 and throat deep blue; sides greenish, sprinkled with 

 carmine spots, much as in a trout; series of olivaceous 

 lines along the rows of scales; vertical fins chiefly crimson 

 at base, then yellow, with a bright blue or black edging, 

 in $ merely speckled; lateral line nearly complete; D. 

 XII 13; A. II, 8; lat. 1. 52; length 2 inches. Ohio 

 Valley, not common, one of the handsomest of our fishes; 

 the coloration is often quite dark. 



