85. PEKCID/E NANOSTOMA. 511 



eye; dark spots downward and forward from eye: ventral and anal 

 flus indigo-blue; pectorals with blue; a bar of deep orange-red along 

 base of both dorsals. Head 4; depth 5. D. X-12; A. II, 8; scales 5- 

 42-6. L. 2^ inches. Chickasawha River, Mississippi. (Hay.) 



(Hay, Proc. U. S. Nat. Mus. 1880, 493.) 

 oa. Cheeks, opercles, and breast entirely scaleless. 



OO. IV. thalassinum Jordan & Brayton. 



Body rather stout, compressed behind, the back somewhat arched. 

 Head large, the snout rather blunt and convex in profile. Eye large, 

 high up. longer than muzzle, 3J in head; interorbital space rather nar- 

 row. Mouth moderate, slightly oblique, the maxillary reaching to the 

 orbit. Upper jaw slightly longer than the lower. Head entirely naked ; 

 throat naked; neck naked anteriorly. Fins all large; membrane of the 

 first dorsal continued to the base of the second ; longest dorsal spine 

 scarcely shorter than the soft rays, the base of the spinous dorsal a 

 little longer than that of the soft dorsal; anal not much smaller than 

 the soft dorsal, its first spine the longer; caudal fin deeply lunate; pec- 

 torals reaching nearly to vent. Male, in life, with the body dark green 

 and blotched above; sides with 9 dark blue-green vertical bars, the 

 five next the last most distinct; spinous dorsal reddish at base, then 

 a broad black band, tlie uppermost third of a bright ferruginous red; 

 second dorsal blackish at base, reddish above; caudal with 2 orange 

 blotches at base, black inesially, p&le orange distally; anal fin of a 

 brilliant blue-green color at base, pale at tip; ventrals greenish; head 

 mostly grass-green ; the streaks forward and downward from eye dark 

 green; females duller and more speckled. Head 4; depth 5. D. X 

 11; A. II, 8; scales 5-43-5. L. 2 inches. Saluda Eiver, South Caro- 

 lina; abundant. 



(Notlwnotus thalassinus Jordan & Bray ton, Bull. U. S. Nat. Mus. xii, 13, 1878.) 



81. IV. tesseliatsam Jordan. 



Color olivaceous, the markings obliterated in the type. Body fusi- 

 form. Head broad and heavy, entirely naked. Mouth moderate, hori- 

 zontal, the lower jaw included, the maxillary extending to opposite 

 front of eye. Anal higher than second dorsal, but not so long, its 

 spines strong. Gill-membranes broadly united. D. X-12; A. II, 8; 

 Lat. 1. 48. L. 2 inches. Allegheny River; only the type (1199, U. S. 

 Nat. Mus.) now known. 



(Hadropterus tessellatus Jordan, Bull. U. S. Nat. Mus. x, 7, 1877.) 



