84. CENTRARCHID^E ENNE ACANTHUS. 469 



A. pomotis (Baird) Gill. Mud Sun-fish. 

 Body oblong, moderately compressed. Snout short. Mouth, wide, 

 the gape short j the maxillary reaching posterior part of orbit. Eye not 

 very large, 3- to 4 in head. Cheeks with about 5 rows of scales. Dor- 

 sal spines low ; the longest about as long as from snout to middle of 

 pupil. Color very dark greenish ; body usually with five rather indis- 

 tinct blackish longitudinal bands along the sides ; cheeks with dark 

 bands, which run nearly parallel, the lowest passing across the maxillary 

 around the front part of the lower jaw. Fins plain dusky. A black 

 opercular spot. Head 2f ; depth 2. D. XI, 10 ; A. V, 10 ; scales G-43-12. 

 L. 4 inches. Southern New York to South Carolina, in sluggish streams 

 near the coast. 



(Centrarclius pomotis Baird, 9th Smithson. Eep. 1854, 325; Jordan, Man. Vert. ed. 

 2, 237: Centrarclius pomotls, Giinther, i, 25(j.) 



24. ENNEACANTHUS Gill 

 Hemioplitcs Cope: Copelandia Jordan. ) 



(Gill, Am. Journ. Sci. Arts. 1864, 92: type Pomotis olesus Grd.) 



Body rather short and deep, compressed. Mouth small ; the supple- 

 mental maxillary bone well developed. Teeth on vomer and palatines, 

 none on the tongue. Opercle ending behind in two flat points, with a 

 dermal border. Preopercle entire. Scales rather large, the lateral 

 line sometimes interrupted. Dorsal fiu continuous, normally with 9 

 spines ; anal fin smaller than the dorsal, with 3 spines ; caudal fin con- 

 vex behind. Branchiostegals 6. Species of small size and bright color- 

 ation. Abnormal variations in the number of dorsal and anal spine^ 

 have given rise to the nominal genera Hemioplites and Copelandia. 

 (sweet, nine ; axavOa^ spine.) 



731. E. eriarctiiis (Jordan) McKay. 



Body rather elongate, the profile forming a nearly uniform curve. 

 Eye large, 3 in head. Mouth moderate, maxillary reaching slightly 

 beyond front of pupil ; its supplemental bone well developed. Scales 

 on cheek in about 3 rows. Soft dorsal high, its longest rays equal to 

 distance from snout to front of opercle ; anal fin very large, with strong 

 spines. Pectorals reaching beyond anal spines; ventral spines reaching 

 anal. Lateral line incomplete. Olivaceous; vertical fins .with round 

 (blue?) spots. Head2f; depth 2J. D. X, 9; A. IV, 8; scales 4-33-10. 

 L. 3 inches. Menomonee River, Milwaukee, Wisconsin; but one speci- 

 men preserved. It is probably an Enneacanthus with an abnormal in- 



