SHINING BASS. 927 
Centrarchus irideus, Cuv. et VAL., ili, 1829, 89.—DrEKay, Fauna N. Y., Fishes, 1842, 31.— 
STORER, Syn., 1846, 291.—GuUNTHRR, Cat. Fishes Brit. Mus., i, 1859, 257.— HOLBROOK, 
8. C., 1660, 18.—PuTNaM, Bnli. M. C. Z., i, 1863, 6.—Cops, Proc. Amer. Philos. Soe. 
1870, 451.—JorpaNn, Man. Vert., 1876, 230; Ann. N. Y. Acad. Soc., i, 1877, 97; Ball. 
U.S Nat. Mas.,, No. 10, 1877, 36; Man. Vert., 1878, 246; Bull. Hayden’s Geol. Surv., 
iv, 1078, 437; Ball. U. S. Nat. Mus., No. 12, 1878, 47.— Nexxison, Cat. Fishes Ill. 1876, 
37.—BEAN, U. 8. Nat. Mus., 93. 
Eucentrarchus irideus, GILL, Am. Journ. Sci. and Arts, 1844, 93. 
Description.—Body very. skort, suborbicular, the snout prcjecting at a considerable an- 
gle; back and belly closely compressed; the greatest thickness of the body being 
through the opercular region ; top of head broad and flattish, the interorbital space being 
about €qual to eye ;. mouth small, very oblique, almost vertical, the maxillary scarcely 
reaching the middie of eye; eye very large, about 3 in head; head 3 in length of body; 
greatest depth 2; dorsal XI to XIII, 12 or 13; anal VIII, 13 or 14; lateral line 
with 37 to 43 scales; coler silvery green, with about 20 horizontal dark stripes along the 
rows of scales, the number of stripes becoming abruptly smaller on caudal peduncle 
where there are 8 or 9; a black spot on last rays of dorsal; a blackish bar below eye. 
Length of 4 to 6 inches. 
Diagnesis.—This species may be known at ‘once among our fresh water 
fishes by the presence of 7 to 9 spines in the anal fin, and 11 to 13 in the 
dorsal. 
Habitat —North Carolina to Southern Illinois and southward, in deep 
and sluggish streams of the lowland. It has been found in abundance 
by Prof. S. A. Forbes in Southern Illinois near Cairo. It has not yet 
been noticed in Ohio, but is to be looked for in the bayous of the Ohio 
River. Where abundant, as in the Carolinas, it is of considerable value 
for food. 
GENUS 63. EUPOMOTIS. Gill and Jordan. 
Pomotis, sp., Cuv. et VAL., Hist. Nat. des Poiss., iii, 1828, and of authors generally (not 
of Rafinerque, 1819 or 1820, Lepomis). 
Eupomotis, GILL and JORDAN, Field and Forest, 1876, p. —. 
Type, Sparus aureus, Walbaum, = Pomotlis vulgaris, C. & V. = Perce gibbosa, L. 
Etymology, ew, well; poma, opercie; ous, ear. 
Dorsal fin much more developed than anal fin, the base of the former more than twice 
that of the latter, the soft parts of the two fins about equal and terminating at the same 
vertical behind ; dorsal spines 10, rather high; anal spines 3; caudal fin emarginate; 
mouth small, with equa! jaws; maxillary without supplemental bone, not reaching to 
orbit; no palatine teeth ; gill rakers short, blunt and week, undifferentiated, destitute 
of teeth ; lower pharyngeal bone broad, concave, with at least the middle teeth usually 
conic: scales ctenoid ; opercular flap moderately developed, rounded ; colors brilliant 
or rather plain ; all the known species have the opercular flap tipped with scarlet. Three 
or four species of Eupomotis are now known, most of them of southern distribution. 
Some of the species of Lepomis approach so closely to these, that the propriety of the 
separation of the genus Eupomotis from Lepomis must be considered very doubtful. 
