FAMILY PERCID^ — POMOTIS. 31 



C. hexacanthus. (Id. Vol. 3, p. 88, and Vol. 7, p. 4.58.) Dorsal lowest in front ; anal high and long. 

 D. 8.16; P. 12; V. 1.5; A. 6.18. Length 12 inches. Wabash river. 



C. sparvides. (Id. Vol. 7, p. 4.39.) Anal higher than in any other species of the genus. Fourteen 

 series of black points along the sides. D. 12. 13; A. 9. 15. Length seven inches. South-Caro- 

 lina. 



C. iridcus. (Id. Vol. 3. p. 89.) Fins spotted with brown; dorsal with a large round, black spot, bor- 

 dered with yellow or orange. D. 11.14; A. 7. 16. Length six inches. South-Carolina. 



C. guloms. (Id. Vol. 3, p. 498, and Vol. 7, p. 459.) Mouth exceedingly large. Brilliantly colored. 

 D. 10.9; A. 3.8. Length eight inches. South-Carolina, Mississippi. 



C. virides. (Id. Vol. 7, p. 460.) Green, with scattering black spots. Resembling C. «raeas in form. 

 D. 11.10; A. 3.8. Length eight inches. Carolina. 



GENUS POMOTIS. Cuvier. 



A few denticulations, more or less obvious, on the borders of the preopercle. Palatines and 

 tongue smooth, and without teeth. Minute teeth on the jaws, vomer and pharyngeals. 

 Branchial rays six. Opercle with an elongated membrane at its angle. 



Obs. This is an exclusively American genus, and composed entirely of fresh-water fishes. 

 It is very closely allied to the succeeding genus. The type of this genus was originally made 

 a Labrus by Linneus, Lacepede and others ; but in calling it a Perch, the common people, 

 according to Cuvier, exercised more discernment than naturalists. 



THE COMMON POND-FISH. 



PoMOTIS VULGARIS. 



PLATE LI. FIG. 166. 



Labras auritus. LiN. 



Spana, Goldfish. ScHCEPFF, Loc. cit. Vol. 8, p. 150. 



Mormu maculata. MiTCHILL, Report in part. 



Labrm auritus. Id. Tr. Lit. and Piiil. Soc. N. Y. Vol. 1, p. 403. 



Lt Pomotis cammun, P. vulgaris. Cuv. et Val. Hist. Poiss. Vol. 3, p. 90, pi. 49. 



TVie Northern Pomotis, P. id. Richardson, Faun. Bor. Am. Fishes, p. 24, pi. 76. 



Fresh-water Sun-fish, P. id. Stoker, Fishes of Massachusetts, p. 11. 



Characteristics. Green mixed with olive, and numerous dull reddish spots over the body. 

 Appendix of the opercle black, bordered behind with scarlet. Length six 

 to eight inches. 



Description. Body much compressed, oval, deepest about the fourth dorsal spine. Fore- 

 head sloping to the mouth. Scales large, adherent, oval, even, and subdentate on the con- 

 cealed margin. Lateral line concurrent with the back. Head small, one-sixth of the total 

 length. Eyes large, circular, and near the facial outline. Nostrils double; the anterior 

 tubular. Mouth small, protractile, with very minute crowded teeth on the jaws, vomer and 



