PERCIDA. 93 
Genus: COTTOGASTER. 
Key to Species. 
A. Mid-line of belly witha series of enlarged caducous scales or plates.— _—copelandi. 
AA, Mid-line of belly naked anteriorly, covered with ordinary scales posteriorly.— 
shumardi. 
Cottogaster copelandi (Jordan). 
Head 33 to 44%; depth 5% to 6%; eye about 3%. D.X to XII-10 to 
12; A. II, 8 org; scales 6-44 to 56-8. Body rather slender. Head rather 
large and long, much resembling that of Boleosoma. Mouth small, hori- 
zontal, sub-inferior, cheeks naked; opercles and neck with a few scales, 
throat naked; ventral plates well developed. Pectoral fin as long as head. 
Color, brownish olive, tessellated above; a ser:es of small, oblong, dark 
blotches along lateral line, sometimes indistinct. Vertical fins with dusky 
specks; a black spot on anterior rays of spinous dorsal. Length 2% or 3 
inches. 
Widely distributed over the state, but apparently very rare 
everywhere. Muskingum river, and Ohioriver at Raccoon Island, 
1889, and Lake Erie at Put-in-Bay, Henshall; Lorain County, 
‘‘ Vermillion river, but one specimen taken,’’ McCormick, 1892 ; 
Maumee river at Toledo, two specimens, Kirsch, 1893 ; 1n Huron 
river at Milan, in 1897, two specimens were taken by Prof. D. 5. 
Kellicott, Mr. E. B. Williamson and the writer. 
Cottogaster shumardi (Girard). 
Head 32 to 4; depth 5 to 5%; eye 3%. D.IX to XI-13 to15; A. II, 10 
to 12; scales 6-48 to 60-11. Body stout, heavy forward, compressed behind. 
Head broad and thick. Mouth large and broad, lower jaw the shorter. 
Premaxillaries usually protractile, but a narrow frenum sometimes present. 
Cheeks, opercles and neck usually scaly; chest naked; belly naked anteri- 
orly, scaled for a short distance before vent. Color dark, densely but vaguely 
spotted with darker; sides with 8 or 10 obscure blotches; a large, black spot 
at base of spinous dorsal behind, and a small one in front. Length 3 inches. 
Not common, but occuring in both the Lake Erie and Ohio 
river drainage. Found on sandy bottom in rivers, not found in 
small streams. Recorded by Henshall for the Muskingum river 
and for the Ohio river near Parkersburg, 1889 ; recorded for 
Vermillion river as Etheostoma wrighti, by McCormick, 1892; in 
1899 the writer took a half dozen specimens in the Ohio river at 
Ironton, and in August, 1900, the species was again taken at 
Bellaire. 
