256 PROCELLARIIDiE. 



Valparaiso, in September. Its flight is described as resembling that of a 

 Prion. 



In the four specimens collected, the describers noticed, besides slight 

 differences in size, some discrepancies in colour, especially in the external 

 rectrices, which were more or less spotted with greyish, the outermost being 

 sometimes quite white. 



(E. tlefiUppiana is rightly referred to the group containing (E. cooki of 

 Gray, to which must be added ffi. leucoptera of Gould, its affinity, as regards 

 the stoutness of its bill, being perhaps nearer to the last-mentioned species. 



It may easily be recognized from both these species, as a comparison of 

 the accompanying Plate with that of (E. cooki in the ' Voyage of the Erebus 

 and Terror ' on the one hand, and with that of CE. leucoptera in the seventh 

 volume of Gould's ' Birds of Australia ' on the other, will show. 



When describing the species I called (E. externa (Ibis, 1875, p. 373), I 

 at one time supposed that it might be allied to the bird now under consider- 

 ation ; but since seeing the types of Q?. clefilippii, it is clear to me that the 

 two are widely distinct species. 



PuFFiNus ELEGANs. Plate XXXIV. 



Puffimis ? et P. elegans, Gigl. & Salvad. Ibis, 1869, pp. 67, 68 ; iid. Atti Soc. Ital. Sc. 



Nat. xi. p. 457; Gigl. Faun. Vertebr. neU' Oceano, p. 32. 



P. supra ex toto cinereo-plumbeus, plumis totis angustissime albo limbatis ; tectricibus alarum 

 mediisj majoribus ac remigibus secundariis albo limbatis, fascias tres trans alam formantibiis ; 

 su1)tus, tectricibus alse inferioribus remigibusque intus candidis ; capitis ac colli lateribus 

 albo-cinereo-mixtis ; caudabrevi ex toto cinereo-plumbea ; tarsis postice nigris, antice Cferu- 

 lescentibus ; digitis subtus nigris, supra ca^rulescentibus, palamis albidis, unguibus nigi'is ; 

 rostro teuui, cserulescentc, culmine et apice nigris; iride bninnea : long. tot. 11'5, alse 7"3, 

 caudae 2-7, rostri a fronte 1'07, a rictu 1'4, tarsi 1'7, dig. med. cum ung. TQS. 



Hab. in Oceano Atlantico meridionali [GiglioK). 



