the Imperial Collection at Vienna. 49 



" The first, second, and third series of upper wing-coverts 

 with a terminal whitish margin. 



" The bill is blackish brown, the basis of the upper mandible 

 under the nostrils and the lower mandible on the under long 

 shield lighter and verging to brownish. The entire under 

 half of the lore, and from the margin of the upper mandible, 

 in a straight line under the ear and upwards to the eye, dark 

 brown-grey (in P. obscurus the under margin of the lore, and 

 from there to the eye, white, behind the eye to the ear-region 

 dark brown) . 



" The first of the remiges longest, on the right wing the first 

 and second of equal length. 



" Tarsus broad, laterally much compressed, almost to a cut- 

 ting-edge. 



" On the underside of the wing the dark brown margin on 

 the forearm much narrower than in P. obscurus. 



" Rectrices 12. 



" Middle toe entirely light-coloured ; no dark space on the 

 web as in P. obscurus." 



Measurements as above. 



In the collection of the late Baron de la Fresnaye there 

 was a Puffinus labelled "Puffinus assimilis, Gould, de Tile de 

 Galega," which seemed to Natterer to be identical with his 

 Puffinus tenebrosus, and of which he made (Falaise, 2nd Oc- 

 tober, 1840) the following description (translated from the 

 German) : — " The lora and upper half of the cheeks, or the 

 ear-region, in a line from the angle of the bill, blackish 

 brown, as the entire upper body. Remiges and rectrices 

 darker, the great tectrices of the secondaries (i. e. the first 

 row of upper wing- coverts) with a narrow white terminal 

 margin. Under tail-coverts blackish brown, with narrow 

 whitish apices, the long anal feathers white, the sides or loins 

 dark blackish-brown, under wing- coverts white, feathers on 

 the margin of the wing dark blackish-brown. The sides 

 of the breast, reaching forward towards the middle, of the 

 colour of the neck, but with whitish margins, quite scaly 

 (geschuppt), which colour rises on the sides of the neck ; where 



SER. III. VOL. III. E 



