AVES PUFFINID/E. 1 35 



Back : Deep cinereous each feather having dark shafts ; some of the 

 feathers with indistinct lighter edging. 



Rump concolor with back. 



Wing: Deep cinereous, some of the scapulars and tertials with indis- 

 tinct edging of a lighter shade. The quills are grey. 



Tail : Like the back and rump in color and a little darker in tone. 



Lower parts : Generally white and not clearly defined from, but shading 

 gradually into, the grey of the upper parts. The under wing coverts are 

 grey. Some of the feathers of the flanks and all the under tail coverts 

 are deep cinereous. 



Bill : "The nasal tubes, and culmen as far as the unguis are black ; the 

 unguis is paler yellow" (Coues). 



Tarsus fleshy brown. 



Feet: Fleshy brown, the webs yellowish. 



Iris hazel brown. 



The female is similar to the male in size and color. 



Geogmpliical Range. — The Southern Oceans. Kerguelen Island. 

 Coasts of New Zealand, Cape Horn, Coasts of Chile and Patagonia, and 

 the Falkland Islands. 



The Cinereous Shearwater was not obtained or observed by the natur- 

 alists of the Princeton Expeditions to Patagonia It is however one of 

 the most common birds off the coast of that region. 



The description given above is based on material in the British Museum 

 of Natural History. 



"This bird frequents the seas on the whole coast of South America. 

 I obtained specimens from Tierra del Fuego, Chiloe, the mouth of the 

 Plata, and Callao Bay on the coast of Peru. It is likewise known to be 

 common in the Northern Hemisphere ; this species, therefore, has a most 

 extensive range. It generally frequents the retired inland sounds in very 

 large flocks ; although, occasionally, two or three may be seen out at sea. 

 I do not think I ever saw so many birds of any other sort together, as I 

 once saw of these petrels, behind the Island of Chiloe. Hundreds of 

 thousands flew in an irregular line, for several hours in one direction. 

 When part of the flock settled on the water, the surface was blackened ; 

 and a cackling noise proceeded from them, as of human beings talking in 



