FISHES OF NEW YORK 221 



winter near the shore, at other seasons often frequenting con- 

 siderable depths. 



123 Coregonus quadrilateralis Richardson 

 Round Whitefish; FrostflsJi 



Ooregonus quadrilateralis Richaedson, Franklin's Journ. 714, 1823. Fort 



Enterprise, British America; Agassiz, Lake Superior, 351, 1850; 



GuNTHER, Cat. Fish. Brit. Mus. VI, 176, 1866; Jordan & Gilbert, 



Bull. 16, U. S. Nat. Mus. 298, 1883; Bean, Fishes Penna. 66, pi. 26, fig. 



47, 1893; Bull. Amer. Mus. Nat. Hist. IX, 337, 1897; Jordan & Ever- 



MANN, Bull. 47, U. S. Nat. Mus. 465, 1896. 

 Salmo (Coregonus) quadrilateralis Richardson, Fauna Bor.-Amer. Ill, 204, 



pi. 89, fig. 1, 1836. Great Bear Lake. 

 Coregonus novae angliae Prescott, Amer. Jour. Sei. Arts. XI, 342, 1851. 



Lake Winipiseogee, N. H. 

 Coregonus novae angliae Gunther, Cat. Fish. Brit. Mus. VI, 186, 1866. 



This is a small species and very readily distinguished from all 

 other American species except Williamson's whitefish by its 

 diminutive mouth. The body is slender, elongate, subterete, its 

 greatest depth slightly exceeding one fifth of total length to 

 base of caudal. The head is long, its length one fifth of total 

 without caudal, and the snout is thin and obtuse at tip. The 

 broad maxilla does not reach to below the front of the eye, its 

 length less than one fifth of length of head. D. 11; A. 10. 

 Scales in lateral line, 80 to 90. Upper parts dark bluish; sides 

 silvery. 



This species is called frostfish in the Adirondacks; other 

 names are Menominee whitefish, roundfish, shad-waiter, pilot- 

 fish and chivey, the last term applied to the fish in Maine. 



The roundfish is found in lakes of New England, sometimes 

 running into streams, the Adirondack region of New York, the 

 Great lakes and northward into British America and Alaska. 

 Its distribution has been extended by transplanting on account 

 of its great value as food for the lake trout and other large fish 

 of the salmon family. It seldom exceeds a length of 12 inches 

 and a weight of 1 pound. Like some other species of whitefish, 

 it spawns in shallow parts of lakes or ascends their small tribu- 

 tary streams for that purpose. The food consists of small 



