230 NEW YORK STATE MUSEUM 



MEASUREMENTS 



Canandai- Upper Chazy 



gua lake, Saranac, lake, 



June 17, Nov. 16, Nov. 2^ 

 1896 1895 1895 



? $ $ 



Length of last dorsal ray % 



Distance from snout to ventral origin. . . 9 .... .... 



Length of ventral 2% 



Length of ventral appendage % .... '. . . . 



Distance from snout to anal origin 13 .... .... 



Length of anal base 2 .... .... 



Length of longest anal ray 1 % .... .... 



Length of last anal ray % .... .... 



Length of pectoral 3 



Distance from snout to adipose fin 14 .... .... 



Length of base of adipose fin 1 .... .... 



Length of adipose fin % .... .... 



Width of base of adipose fin % 



Length of longest gill raker % % & 



Taking the fish in the order above given, the gill rakers are: 

 9 + 17, 10 + 16, and 9 + 17. The scales are: 10-76-8, 10-87-9, and 

 11-81-10. The branchiostegals in various specimens examined 

 are 9 to 10; divided dorsal rays, 10 to 11; anal rays, 10 to 11. 



Genus ARGYROSOMUS Agassiz 



This genus is very close to Coregonus, from which it 

 differs in the larger mouth and more produced jaws, the pre- 

 maxillaries being placed nearly horizontally, and the lower jaw 

 decidedly projecting beyond them. Gill rakers very long and 

 slender, about 30 on lower limb; vertebrae 55. These characters 

 are associated with the greater voracity and, in general, greater 

 activity of the species of Argyrosomus. The species are 

 numerous in the northern parts of Europe, Asia and North 

 America, and all are valued as food. 



125 Argyrosomus osmeriformis (H. M. Smith) 

 Smelt of New York lakes 



Coregonus hoyi BEAN, Proc. U. S. Nat. Mus. V, 658, 1883; GOODE, Fish & 

 Fish. Ind. U. S. pi. 197 B, 1884; not Coregonus hoyi Gill. 



Coregonus osmeriformis SMITH, Bull. U. S. F. C. XIV, 2, pi. 1, fig. 2, 1895. 

 Lakes Seneca and Skaneateles, New York. 



Argyrosomus osmeriformis JOED AN & EVERMANN, Bull. 47, U. S. Nat. Mus. 

 468, 1896. 



