MONOGRAPH OF THE PETRELS. 



slate-colour, like that found on the sides of the breast at the base of the 

 axillaries, while in other individuals there is a patch of slaty-black near the thighs. 

 These markings, however, vary greatly in extent, and apparently gradually disappear 

 on the axillaries, which become entirely white. 



(E. phceopygia was described by Salvin from Chatham Island in the Galapagos 

 Archipelago. Two specimens were procured by Captain Kellett and Lieutenant Wood 

 during the voyage of the " Pandora," which they presented to the British Museum. 

 The Webster-Harris Expedition to the Galapagos furnished examples from the 

 following islands, Albemarle, Wenman, Indefatigable, Barrington, and Charles 

 (Rothschild and Hartert, Nov. Zool., VI. , p. 198). Professor Ridgway likewise records 

 the capture of the species in the Galapagos Archipelago in July and August, 1891 

 (Pr. U. S. Nat. Mus., XIX., p. 648). Mr. Rothschild has recently referred the Fulmar 

 of Laysan to (E. sandwichensis, but having examined the series of skins in his museum 

 I find that they cannot be separated from (E. phceopygia of the Galapagos. 



Adult. General colour above dusky-brown, slightly varied with grey on the back 

 and scapulars, which are ashy-grey on the margins of the feathers ; wing-coverts 

 dusky-brown, without grey edgings ; quills blackish, the secondaries tinged with grey on 

 their outer webs, the primaries exhibiting some white towards the base of the inner web, 

 and showing a narrow white margin for nearly the whole length ; lower back and rump 

 dusky-brown, like the back, slightly tinged with grey on the margins of the feathers ; 

 upper tail-coverts and tail-feathers dusky-brown, with white bases ; head a little 

 darker than the back, but not forming a distinct cap ; feathers below the eye and 

 ear-coverts black ; forehead, lores and cheeks pure white, mottled with small black 

 spots, where the black and white join ; sides of neck black, and similarly freckled and 

 mottled with black spots and bars ; throat and under-surface of body pure white, with a 

 few small streaks and arrow-head marks of ashy-grey on the sides of the body ; the 

 sides of the upper breast ashy-brown ; under wing-coverts white, with a broad 

 blackish-brown band round the edge of the wing, somewhat relieved by whitish edges 

 to the feathers ; axillaries white, with a dusky bar near the end of the feathers ; quills 

 dusky-brown below, with a considerable amount of white on the inner webs of the 

 primaries ; " bill black ; feet light bluish flesh-colour ; lower portion of about half the 

 webs and toes black, this colour extending along the outer toe and one fourth of an inch 

 up the tarsus ; iris brown " (Webster-Harris). Total length 16.3 inches ; culmen, 

 1.3 ; wing, 11.9 ; tail, 5.5 ; tarsus, 1.55 ; middle toe and claw, 2.0. 



The specimen described and figured is Salvin's typical example in the British 

 Museum. 



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