Jordan and Evermann. Fishes of North America. 989 

 452. ACANTHARCHUS, Gill. 



Acantharchug, GTtt, Amer. Journ. Sci. and Arts, 1864, 92, (pomotis). 



Body oblong, robust, not much compressed or elevated. Mouth* not 

 very large, the broad maxillary with a well-developed supplemental bone ; 

 lower jaw projecting. Teeth on vomer, palatines, pterygoids, and tongue ; 

 lingual teeth in a single patch ; pharyngeal teeth sharp. Gill ra-kers few, 

 rather long and strong. Opercle emarginate ; preopercle entire. Scales 

 cycloid, large. Lateral line complete. Dorsal spines usually 11 ; anal 

 spines 5 ; caudal fin rounded behind. Close to Ambloplites, differing chiefly 

 in the rounded caudal. One species known. (uKavda, spine ; apxh, anus.) 



1884. ACANTHARCHUS POMOTIS (Baird). 



(MUD SUNFISH.) 



Head 2| ; depth 2 ; eye not very large, 3$ to 4 in head. D. XI or XII, 

 10 or 11; A. V, 10; scales 6-43-12, about 5 rows on cheek. Body oblong, 

 moderately compressed. Snout short. Mouth wide, the gape short ; the 

 maxillary reaching posterior part of orbit; lingual teeth in 1 patch. 

 About 5 gill rakers besides rudiments. Dorsal spines low, the longest 

 about as long as from snout to middle of pupil. Pectoral If in head. 

 Color very dark greenish ; body usually with 5 rather indistinct 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. Length 

 6 inches. Southern New York to South Carolina, in sluggish streams near 

 the coast; locally common, especially in the Delaware River; a small 

 species of little value as food. (Pomotis, the sunfish, a synonym ofLepomis.) 



Centrarchus pomotis, BAIRD, Ninth Smithson. Report, 325, 1854, New Jersey; New York; 



(Coll. Baird); GUNTHER, Cat., i, 256, 1859. 



Acanttiarchns pomoti*, JORDAN & GILBERT, Synopsis, 469, 1883; BOLLMAN, I. c., 563, pi. 70, fig. 1. 

 Amblopliles pomotis, BOULENGER, Cat., i, 11. 



453. AMBLOPLITES, Rafinesque. 

 (ROCK BASS.) 



Ambl-plites, RAFINESQUE, Irtith. Oh., 33, 1820, (ichthdoides rupestris), 



Body oblong, moderately elevated, compressed. Mouth large, the 

 broad maxillary with a well-developed supplemental bone; lower jaw 

 projecting. Teeth on vomer, palatines, tongue, entopterygoids, and 

 ectopterygoids ; lingual teeth in a single patch ; pharyngeal teeth sharp. 

 Branchiostegals 6. Opercle ending in 2 flat points ; preopercle serrate at 

 its angle ; other membrane bones chiefly entire. Gill rakers rather long 

 and strong, dentate, less than 10 in number, developed only on the lower 

 portion of the arch. Scales large, somewhat ctenoid ; lateral line com- 

 plete, the tubes occupying at least the anterior half of the surface of the 

 scale. Dorsal fin much more developed than the anal fin, with 10 or 11 



