PUFFINUS GAVIA. 



Adult female. Similar to the male, but having the ashy-brown colour of the sides 

 of the neck encroaching on the throat, and extending down the sides of the breast, 

 the chin being white, but the centre of the throat mottled with ashy-brown ; sides of 

 the body smoky-brown, as also a patch over the thighs ; under tail-coverts white, the 

 lateral ones edged with smoky-brown along the outer webs ; under wing-coverts white, 

 with a broad band of light smoky-brown along the edge of the wing ; axillaries smoky- 

 brown. Total length, 13.0 inches ; culmen, 1.4 ; wing, 9.0 ; tail, 2.7 ; tarsus, 1.7 ; 

 middle toe and claw, 1.9. 



According to Sir Walter Buller, the nestling is covered with very thick down, slate- 

 coloured on the upper, and white on the under-surface. The young bird assumes the 

 colours of the adult from the nest, but with rather paler margins to the wing-coverts, 

 the woolly covering clinging longest to the back and flanks. 



The description of the male is taken from a specimen procured in New Zealand by 

 Sir Walter Buller, and the female is from the Snares Islands, obtained by Mr. Henry 

 Travers. Both these specimens are in the Rothschild Collection. 



The figure in the Plate I believe to have been drawn from the Hauraki Gulf 

 specimen. 



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