AVES PUFFINID^E. 



Tail : Pearl grey, like the back. Under parts, pure white, shaded on 

 the sides and flanks with pale pearl grey. 



Bill : Yellow, with the tip, the middle of the culmen, the nasal covers 

 and bases of the maxillae dusky brown or black. 



Tarsi : Flesh color, darkest externally. 



Feet : Flesh color, the outer toe darker in tone ; webs yellowish flesh 

 color. 



"Male: Valparaiso, August 4. 1879. Legs gray, with blue stains; 

 bill grey, with blue patches." (Sharpe, P. Z. S. 1881, p. 11.) 



The sexes are alike in size and color. 



Geographical Range. Southern and Antarctic Oceans generally. The 

 entire Pacific Coast of America north to the mouth of the Columbia River. 

 Cape Horn. Cape of Good Hope. 



This petrel, which is colored like many gulls, was not obtained by the 

 Princeton Expeditions to Patagonia. As may be inferred from the geo- 

 graphical range given above, the birds have been recorded from the Straits 

 of Magellan, and points off the Patagonian Coast. The material on 

 which the description is based, is a large series in the British Museum of 

 Natural History, representing the species from most points where it is 

 known to occur. 



"I saw this petrel on both sides of the Continent south of lat. 30 ; but 

 seldom more than two or three together. I am informed that it arrives 

 in Georgia in September for the purpose of breeding, and that it lays its 

 eggs in holes in the precipices overhanging the sea. On the approach of 

 winter it is said to retire from that island. My specimen was caught in 

 the Bay of St. Mathias (lat. 43 S.) by a line and bent pin, baited with 

 a small piece of pork; the same means by which the Pintado (Dapt. 

 Capensis] is so easily caught. It is a tame, sociable, and silent bird ; and 

 often settles on the water : when thus resting it might from a distance be 

 mistaken, owing to the general colour of its plumage, for a gull. One 

 often approached close to the stern of the Beagle, and mingled with the 

 Pintados, the constant attendants on vessels traversing these southern 

 seas." Darwin, Voy. "Beagle," Birds, p. 140). 



