248 NEW-YORK FAUNA. 



THE COMMON SHAD SALMON. 



COREGONUS CLUPEIFORMIS. 



PLATE LX. FIG. 198. 



White-fish of the Lakes, Shad Salmon, S. clupeiformis. Mitchill, Month. Mag. Vol. 2, p. 321. 

 Herring Salmon, Coregonus artedi. Lesueur, Journ. Acad. Vol. 1, p. 231. 

 Salmo (Coregonus) artedi. Richardson, Faun. Bor. Amer. Vol. 3, p. 203. 



Characteristics. Body elongated, compressed, arched above and beneath. Bluish above ; 

 silvery and yellow on the sides. Length one to two feet. 



Description. Form elongated in the males, but deeper and more compressed in the females. 

 Scales orbicular, large, and ascending high up on the caudal fin. Lateral line not very con- 

 spicuous, nearly straight. Head small, compressed, flattened above. Mouth small, with no 

 teeth on the margin of the jaws. Nostrils double, and near the end of the pointed snout. The 

 dorsal fin higher than long, even on its margin, and with twelve rays, of which the first two 

 are simple and short. Pectorals long and pointed ; the three lower ones very slender. Ven- 

 trals small, and placed under the posterior part of the dorsal. Anal under the adipose, and 

 composed of fourteen rays. Caudal forked. 



Color. Bluish, with silvery reflections above ; with iridescent, pink, and yellowish on the 

 sides ; white beneath. Irides yellowish white. 



Length, 15 -0. 



Fin rays, D. 12.0; P. 16; V. 12; A. 14; C. 19 j. 



This species was named by Dr. Mitchill, but Lesueur's account, which appeared only a 

 few weeks after, contains the first recognizable description. It occurs in Lakes Erie and 

 Ontario, and in the smaller lakes in the interior of the State, which still communicate with 

 our inland seas. 



THE OTSEGO SHAD SALMON. 



Coregonus otsego. 

 Salmo otsego, The Otsego Bass. Clinton, Med. and Phil. Register, Vol. 3, p. 188, plate. 



Characteristics. With numerous dusky longitudinal lines along the sides. Length one to two 

 feet. 



Description. Body elongate, subcylindrical, compressed. Back arched. Scales very small. 

 Lateral line indistinct, straight. Mouth small, with a protuberant bifid upper lip. No teeth 

 in the maxillaries, intermaxillaries, vomer, palatines or pharyngeals. The dorsal with nine ? 

 rays, three of which are imperfect. Adipose filamentous at the tip, caudal forked. 



