J818.) NEW SPECIES OF FISHES. 231 



al)domen; lower jaw somewhat longer than the upper, re< 

 curved, opening, prolonged as far as the eyes; teeth strong, 

 cylmdric, long and crooked, three at the tongue very 

 strong, one of which is at its extremity; pectorals large; 

 anal wide in front, narrow back^ sHghtly notched; caudal 

 forked, with acute lobes; adipose fin a little bent, and 

 terminating in a point; eijes large, orbicular, iris white 

 and brown, pupil black; scales equal, rhomboidal. 



Length about ten inches. 



Taken with the line, from Boston to Newport. Good 

 for food, 



B. 8.— P. 14 a 16.— D. 11.— V. 9.— A. 15.— C. 19|. 



We believe this to be a new species, and have called 

 it viridescensy from the green colour of its back, 



Ge'/zz/^ COREGONUS. Ombres. 



1 . C o R E G N us Artedu Body subfusiform , a little 

 elevated at the back; head small, havin": an osseous 

 radiated plate, which is covered by the skin; snout 

 pointed. 



In form this species approaches the Scombres; a sec- 

 tion of it is oval. Head small and narrow; snout short, 

 terminated by small intermaxillaries; maxdlaries wide, 

 sharp-edged as in the herring, edges entire; mandibles ca- 

 rinate, producing inwardly a triangular pedunculate ex- 

 pansion, very small conical teeth inserted in the skin of 

 the lips, at the extremity of the jaws: these teeth were 

 sufficiently manifest in a small individual, but not visi- 

 ble m a larger one, a female, which came under my ob- 

 servation. Rays in the osseous plate of the head tubular, 

 and open at the exterior, some tending backwards, and 

 others towards the end of the snout. A faint carinated 



