114 ARCTIC CINEREOUS SHEARWATER. 



along, harassing and pursuing its quarry with singular 

 address, snatching it from the surface, or diving after 

 it through the waves, on which they are often seen to 

 sit as they mount to the sky, or sink into the yawning 

 abyss of the raging deep." 



Like the other Shearwaters, this species lays a single 

 white egg, which I figure from a specimen sent me by 

 Mr. Tristram. 



The male has the top of the head, cheeks, and 

 occiput brown black; the nape ash grey; upper part 

 of the scapularies russet brown, the lower brown, 

 fringed with white. Wing coverts dark brown; pri- 

 maries and tail black, the inner web of the former 

 not so white as in the last described species; upper 

 tail coverts white, mottled in the middle with grey; 

 throat, sides and front of neck, crop, and abdomen, 

 white; under wing coverts grey, light brown, and 

 white; flanks and under tail coverts brown; beak black, 

 lighter below and on the claw-like hook at the end 

 of upper mandible. Feet and legs yellow on the 

 inside, darker brown on the outer aspect; iris, brown. 



My figure is from a specimen kindly sent to me by 

 Mr. Tristram, and is from Greenland. 



