CARP. 869 



Cypkinds carpio Linnaeus. 



Carp. 



This well known fish was originally a native of Asia, from whence it has been intro- 

 daced into Earope and America. In domestication it has split np into many varieties. 

 lam not aware that it has as yet become naturalized in any part of Ohio, As a fish for 

 oriiinary pond ealtnre it has no eqnal. 



FAMILY X. DOROSOMATID^. THE GIZZARD 



SHADS. 



Herring-like fishes, with the mouth entitely toothless, small, sabinferior, obliqne, over- 

 lapped by the blantish snout, maxillary bone narrow and short, of a single piece, not 

 reaching to opposite the middle of the eye, and forming bnt a small part of the lateral 

 margin of the upper jaw; mandible short and broad, its rami enlarged at base; gill- 

 rakers slender, comparatively short ; gill membranes not united ; branchiostegals 5 to 

 7 in number, fourth branchial arch with an accessory branchial organ ; head short, 

 body ovate, elevated, strongly compressed, covered with rather large, deciduous scales; 

 no lateral line ; belly closely compressed, its edge retrorsely serrated ; dorsal fin about 

 midway of the body, nsually behind ventrals ; pectorals rather long, with an accessory 

 scale ; anal very long and low ; caudal forked ; stomach stout, mnscular, gizzard-like. 

 Genera two, with about a dozen species inhabiting the coasts and rivers of most warm 

 regions. 



ANAI.Y8I8 OF Genera of Dokosomatid^. 

 *Last ray of dorsal fin produced into a filament. . . . Dososoma. 46. 



Genus 46. DOROSOMA. Rafinesque. 



Dorosonui, Rafinesque, loh. Oh., 1830, 39. 

 Chatoeetus, Cuvier, Rugne Animal, 2d Ed., 1828. 



Type, Dorosoma notaia, Raf,, Clupea keterurua, Raf. 



Etymology, daros, lance ; soma, a body. 



As here understood, this genus includes all those Darosomaiidce which have the last 

 ray of the dorsal fin prolonged into a filament. The species of this genus are properly 

 marine, bnt most of them ascend fresh waters, and individuals of some species are perma- 

 nently resident there. 



