(43) 
[22. Boleichtliys elegans , Gir. 
Several specimens from Union and Johnson counties, apparently be- 
long to this species. The following description is made up from Dr. Jor- 
dan’s account of the species in Ann. N. Y. Lyc., XI, 308, modified to in- 
clude my larger specimens, some of which are 2 inches long. 
Body short, chubby and compressed, bearing some resemblance in 
form to Microperca punctulata. Mouth moderate, with equal jaws. 
Dorsal fins usually distinctly separate, the second l as long as the 
first and twice as long as anal. Vertical rows of scales varying from 42 to 
56. Lateral line distinct on from 13 to 30 scales, arched high over pec- 
torals, running parallel with the rounded nuchal region, separated from the 
dorsal fin by but 3 rows of scales. Head and neck scaly, throat bare, as 
well as a small space behind pectorals and ventrals. 
Head 3| to 4 in length, depth 4f. Eye 3 to 4 in head Width at 
pectorals (in adult)*6| in length. Fin rays, D. IX or X — 9 to 1] ; A. II 
— 7 or 8. Color greenish with dark specks, in Illinois specimens with 
about 10 dorsal bars, and 6 lateral blotches on posterior half of side. Dark 
line before eye and in adults another below eye, and an opercular blotch. 
S. A. F.] 
Genus MICROPERCA, Putnam. 
23. Microperca punctulata Putnam. Least Darter. (M. V. 229; Nel- 
son, 34.) 
In clear streams. Drury Cr., Union Co.; Crystal Lake, 
McHenry Co.; Kane Co. 
Family PERCIDAE, (the Perches.) 
Genus PE RCA, Linnaeus. 
24. Perea americana Schranck. Common Yellow Perch, Ringed 
Perch. (M. V. 229; Perea flavescens Nelson ; 36.) 
Very abundant in Lake Michigan and all its tributaries, and to 
a less degree in all the tributaries of the Mississippi River in the 
northern third of the state. In the southern part of the state it 
is very rarely or never found, its range, like that of Eupomotis 
aureus , being bounded by lines of latitude. Peoria and Pekin, 
111.; L. Mich 
Genus STIZOSTETHIUM, Rafinesque. 
25. Stizostethium canadense (Smith) Jordan. Sauger. Sand Pike, 
Ground Pike, Gray Pike (M. V. 230. Stizostedium griseum Nel- 
son, 36.) 
Generally abundant in the lakes and all the larger streams. L. 
Mich.; 111. R. at Peoria, &c. 
