BROWN PETREL. 31 



Adult male. Entire plumage, both above and below, sooty-black, with no 

 white on the head ; bill yellow, culmen and tip black, iris hazel, feet black. Total 

 length 545 mm. ; culmen 42, wing 348, tail 110, tarsus 54. 



Adult female. Similar to the adult male. Total length 530 mm. ; culmen 40, 

 Wing 337, tail 101, tarsus 52. 



Nestling. Covered with dark grey down. 



Nest. A few leaves placed at the end of a burrow. 



Egg. Clutch, one ; pure white ; axis 72 mm., diameter 51. 



Breeding -season. November and December. 



Distribution and forms. New Zealand Seas, breeding on the mainland and 

 islands. No subspecies differentiated, but Loomis has recently (Proc. Calif. Acad. 

 Sci., Vol. II., pt. ii., p. 108, April 22nd, 1916) recorded the species killed at sea 

 near the Galapagos Islands. 



Genus ADAMASTOR. 



Adamastor Bonaparte, Comptes Rendus Acad. Sci. Paris, Vol. XLIIL, p. 595, Sept. 1850. 

 Type (by original designation) : Pr. hczsitata Forster = Procellaria cinerea Gmelin. 

 Priofinus Auct., not of Hombron and Jacquinot, 1844. 



Large Puffinine birds agreeing with Procellaria with bill features, but with 

 shorter wings, comparatively longer tail and shorter legs. The different coloration 

 of the feet suggest a more close alliance with Puffinus (sensu latissimo) and Ardenna 

 (s. str.). The culmen is less than the tarsus which is half the length of the rounded 

 tail, which is one-third the length of the wing ; in the preceding genus (Procellaria) 

 the tarsus is more than half the length of the tail, which is less than one-third the 

 wing-length. 



Coloration brown -grey above, white below. 



21. Adamastor cinereus. BROWN PETREL. 



Gould, Vol. VII., pi. 47 (pt. xxxv.), Dec. 1st, 1848. Mathews, Vol. II., pt. 1, pi. 81, May 

 30th, 1912. 



Procellaria cinerea Gmelin, Syst. Nat., Vol. I., pt. n., p. 563, April 20th, 1789 : Antarctic 



Circle = Seas south of New Zealand. 



Procellaria gelida Gmelin, ib., p. 564 : " inter 35 and 50 South." 



Procellaria melanura Bonnaterre, Tabl. Encycl. Meth. Ornith., Vol. I., p. 79, \ 



1791 | All these 



Procellaria hcesitata Forster, Desc. Anim., ed. Licht., p. 208, (Jan. 1st) 1844 ! based on 



Not of Kuhl, Beitr. Vergl. Zool. Anat., p. 142, (pref. April 9th) 1820 ) same source 



Adamastor typus Bonaparte, Consp. Gen. Av., Vol. II., p. 187, Oct. 1st, 1857 j as Gmelin's 



Procellaria adamastor Schlegel, Mus. Pays-Bas, Vol. VI., Procell., p. 23, July j species. 



1863 / 



Procellaria pallipes Mathews, Birds Austr., Vol. II., pt. 2, p. 123, July 31st, 1912 : New 



Zealand. Ex Solander MS. 



Priofinus cinereus dydimus Mathews, Austral Av. Rec., Vol. III., pt. 3, p. 54, April 7th, 1916 : 



New Zealand. 



DISTRIBUTION. Australia. Gould says that he got specimens between Hobart and Sydney. 

 But none preserved now. 



Adult male. General colour above ash-grey, including the feathers of the back, 

 scapulars, and upper tail-coverts ; the long scapulars and wing -coverts a little darker 

 than the back, and show the shaft-streaks ; bastard-wing and primary -coverts 

 ash-brown ; primary -quills, hoary-grey, paler on the inner webs, outer web of the 

 first primary blackish ; shafts white towards the base ; secondaries hoary -grey, 

 more or less white on the basal portion ; tail for the most part brown with hoary- 

 grey on the outer webs of the feathers and becoming whitish towards the base ; 

 head and sides of the face darker than the back, and inclining to black or slate- 



