CARP. 869 
CYPRINUS CARPIO Linnzeus. 
Crrp. 
This well known fish was originally a native of Asia, from whence it kas been intro- 
duced into Europe and America. In dom>stication it has split up into many varieties. 
I am not aware that it has as yet become naturalized in any part of Qhio. Asa fish for 
ordinary pond cultare it has no equal. 
FAMILY X. DOROSOMATIDZ. THE GIZZARD 
SHADS. 
Herring-like fishes, with the mouth entirely toothless, small, subinferior, oblique, 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 but 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, usually behind ventrals; pectorals rather long, with an accessory 
scale; anal very long and low; caudal forked ; stomach stout, muscular, gigzard-like. 
Genera two, with about a dozen species inhabiting the coasts and rivers of most warm* 
regions. 
ANALYSIS OF GENERA OF DORGSOMATIDZE. 
“Last ray of dorsal fin produced into a filament. 2 6 Doresoma. 46. 
GENUS 46. DOROSOMA. Rafinesque. 
Doresoma, RAFINESQUE, Ich. Oh., 1820, 39. 
Chatoessus, CUVIER, Regne Animal, 2d E.l., 1828. 
- Type, Dorosoma notata, Rat., Clupea heterurws, Raf. 
Etymology, doros, lance; sema, a bedy. 
As here understood, this genus includes all these Dorosematide which have the last 
ray of the dorsal fin prolonged into a filament. The species of this genus are properly 
marine, but most of them ascend fresh waters, and individuals of some species are perma- 
nently resident there. 
