PROCELLARIID^. 251 



CESTRELATA MAGENTA. PI. XXX. 



JEstrelata magenta, Gigl. & Salvad. Ibis, 1869, p. 61 ; iicl. Atti Soc. Ital. Sc. Nat. xi. p. 451 ; 

 Gigl. Distr. Faun. Vertebr. neir Oceano, p. 41 (1870). 



CE. supra intense fusco-nigra, plumis sub quadam luce pallide marginatis ; alis, Cauda, lateribus, 

 subalaribus ac torque jugulari fusco-nigris ; regione anteoculari intensiore; fronte albido- 

 sericea fere argenteo colore perfusa, lateraliter magis conspicue ; gula, pectore abdomineque 

 albis ; subcaudalibus lateraliter cinereo tinctis, scapis parte apicali fuscis ; rostro nigro, pedibus 

 earneis, digitis palmisque nigris excepta parte basali interna tarso concolori ; iride brunnea • 

 long. tot. 14'0, alse 13'Oj caudee 5-0, rostr. a fronte 1'25, a rictu 1'85, tarsi 1"6, dig. med. cum 

 ung. 2 '2 poU. Angl. 



Hab. in Oceano Pacifico australi [Giglioli). 



The single example of this species brought home by the Expedition was 

 shot on the 22nd of July, 1867, in the Pacific, in lat. 39° 38' S., long. 125° 58' W. 

 (of Greenwich). Another specimen w^as seen on the 3rd of August, in 

 lat. 32° 23' S., long. 92° 39' W. ; and on the 31st of August a third, in 

 lat. 26° 7' S., long. 88° 50' W. 



The authors of the paper in ' The Ibis ' compare the species with 

 CE. rostrafa of Peale ; but its relationship seems to me to be rather with 

 CE. mollis and its allies. It is, however, a considerably larger species than 

 (E. mollis, approaching in dimensions CE. lessoni. 



The chief characteristics of this bird, besides the dimensions given 

 above, are the dark undersurface of the wings, and the uniform dark colour 

 of the primaries below. The light lateral margin to the frontal feathers, too, 

 forms almost a superciliary mark. The wings project fully an inch and a 

 half beyond the end of the tail. 



The colouring of CE. rostrata of Peale is much browner than in this 

 species, judging from the specimens so called by Bonaparte in the Paris 

 Museum, which I have recently had an opportunity of examining. Indeed, 



2 M 



