366 Mr. J. Gould on the Procellaridse, 



and tail ; feathers of the scapularies, which are very broad in form, 

 washed with lighter brown at their tips ; face and throat dark 

 brownish gray, the remainder of the under sui'face grayish brown; 

 bill reddish fleshy brown, darker on the culmen and tip ; legs and 

 feet yellowish flesh-coloui*. 



Total length 15^ inches; bill If; wing 11| ; tail 6; tarsi 1|; 

 middle toe and nail 2f . 



This species was procured by Mr. Gilbert on the Houtmann^s 

 Abrolhos off the western coast of Australia. Both this and P. 

 cameipes agree tolerably well with Lesson^s P. chlororhynchus ; 

 but as the members of this group are very numerous, and his 

 description, which is far too concise, applies equally well to both, 

 it is impossible to say whether it has reference to either of them 

 or to some other. 



Puffinus assimilis, Gould, Proc. of Zool. Soc. part 5. p. 156. — 

 Found on the seas bounding the eastern coast of Australia, and 

 on Norfolk Island, where it breeds. 



Puffinuria Urinatrix. — Very numerous in the seas adjacent to 

 the coasts of Van Diemen^s Land and New Zealand. Specimens 

 brought home by Captains King and Fitzroy from the Straits of 

 Magellan do not diifer from those obtained in the localities above 

 mentioned. 



Daption Capensis, Steph. — Found in all parts of the ocean 

 round the globe from the 15th to the 55th degrees of S. lat. 



Prion vittatus, Cuv. — Very common off Kerguelen's Land and 

 in all the seas to the southward of Australia. 



Prion Banksii (Pachyptila Banksii, Smith). — Found in the 

 temperate latitudes of the Atlantic and Pacific, and 1 believe in 

 similar latitudes all round the globe. 



Prion Turtur [Procellaria Turtur, Kuhl, and of Banks^s draw- 

 ings). — This species differs from the last in the delicate blue of 

 the upper surface, in the narrower form of the bill, and in the 

 laminae being scarcely visible. I have shot it in company with 

 P. Banksii, and it appears to enjoy a similar range of habitat, 

 being equally numerous in the temperate latitudes of the Pacific 

 and of the Atlantic. 



Prion Ariel, Gould, Proc. of Zool. Soc. — I killed this species 

 in Basses Straits, where it was rather numerous. 



Thalassidroma tropica, n. sp. — Head, back, wings, tail and 

 breast dark sooty black ; chin, under coverts of the wings, abdo- 

 men, flanks, under tail-coverts, and a broad crescent- shaped band 

 across the upper tail-coverts snow-white; bill, feet and legs black. 



Total length 7f inches ; bill ^ ; wing Q^ ; tail 3J- ; tarsi If ; 

 middle toe and nail 1^. 



I observed this species in the Atlantic, where it is confined to 

 the equatorial regions, being most abundant in the vicinity of the 



