238 NEW YORK STATE MUSEUM 



fourths times in greatest body depth, three and one fourth times 

 in distance, between dorsal and snout, and one and one half 

 times in head; free margin slightly concave; origin midway 

 between end of snout and base of caudal; dorsal base opposite 

 nine scales. Anal with 10 to 12 developed rays, the longest ray 

 equal to base of fin and two thirds of hight of dorsal. Yentrals 

 as long as dorsal is high, their origin midway between anterior 

 dge of orbit and base of caudal. Ventral appendage short, 

 covering about three scales. Pectorals as long as ventrals. 

 Scales rather large, about 75 in lateral line, seven or eight above 

 the lateral line, seven or eight below the lateral line. Lateral 

 line straight except at origin, where it presents a rather marked 

 curve. Sides of body uniformly bright silvery, with pronounced 

 bluish reflection in life; the back dusky, the under parts pure 

 white without silvery color. Above lateral line, light longitudi- 

 nal stripes involving central part of scales extend whole length 

 of body. Fins flesh color or pinkish 'in life, the dorsal and cau- 

 dal usually showing dusky edges; postorbital area with a bright 

 golden reflection; iris golden, pupil black. Branchiostegals, 

 eight. Average length, 15 inches. 



Habitat: Lake Ontario, Lake Michigan, Lake Superior, and 

 -doubtless the entire Great lake basin, in deep water. This fish 

 is called long-jaw in Lakes Michigan and Ontario. Specimens 

 were obtained from John S. Wilson of Wilson N. Y. and from 

 George M. Schwartz of Rochester N. Y. Dr R. R. Gurley also 

 secured examples at Nine Mile Point N. Y. in June 1893. 



This species is quite different from any other whitefish inhab- 

 iting the Great lake basin. It may be at once distinguished 

 from all the whitefishes known to occur in the United States by 

 the general form of body combined with the very long lower jaw, 

 which is contained less than twice in the length of the head and 

 extends backward to or beyond the posterior edge of orbit. 



129 Argyrosomus tullibee (Richardson) 



i 



Tullibee; Mongrel Whitefish 



almo (Coregonus) tullibee RICHARDSON, Fauna Bor.-Amer. Ill, 201, 1836, 

 Cumberland House, Pine Island Lake. 



