S5. PERCID^ XANOSTOMA. 
511 
eye; dark spots downward and forward from eye: ventral and anal 
fins indigo-blue; pectorals wntb bine; 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. {Say.) 
(Hay, Proc, U. S. Nat. Mus. 1880, 493.) 
aa. Cheeks, opercles, and breast entirely scaleless. 
§00. IV. thalassiniim 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, 3.1 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, the uppermost third of a bright ferruginous red; 
second dorsal blackish at base, reddish above; caudal with 2 orange 
blotches at base, black mesially, pale orange distally; anal fiu 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; depths. D. X- 
11; A. II, 8; scales 5-43-5. L. 2J inches. Saluda River, South Caro- 
lina; abundant. 
{Xothonotus thalassinus Jordan & Brayton, Bull. U. S. Nat. Mns. xii, 13, 1878.) 
§01. IV. tessellataim 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; 
I^at. 1. 48. L. 2J inches. Allegheny River; only the type (1199, U. S. 
Xat. Mus ) now known. 
(Hadropterus tessellatus Jordan, Bull. U. S. Nat. Mus. x, 7, 1877.) 
