584 Messrs, G. M. Mathews and T. Iredale on some 



If the typical species of Puffinus be corapai'ed with typical 

 3Iojagueus=Procellcma, the differences will be seen to be 

 very great and not emphasized sufficiently by the diagnoses 

 given, though the compression of the tarsus is almost as 

 much in Majaqueus = Procellaria as in Pujjinus. If Puffinus 

 kuhlii be now placed between these two, in the main features 

 it will be seen to be much closer to Procellaria than to 

 Puffinus : the bill is longer but agrees closely with that of 

 Procellaria ; the tarsus is, however, not so compressed 

 as in Procellai'ia and obviously differs from the flattened 

 tarsus of Puffinus s. str., while the anterior edge is not 

 sharp. 



If Puffinus leuconielas be examined, discord with typical 

 Puffinus is also seen as elaborated below. The species 

 Puffinus carneipes Gould differs at sight in its peculiar bill, 

 and from a study of the nestling stage Iredale separated it 

 under the generic name Hemipuffinus. 



Consideration of the other species of " Puffinus " caused 

 Mathews, in the ' Birds of Australia,' to list the Australian 

 forms in this manner : — 



Genus Puffinus Brisson. 



Puffinus assimilis Gould, 



Genus Reinholdia Mathews. 



ReinJioldia reinholdi (Mathews). 

 Genus Thyellodroma Stejneger. 



Thyellodroma pacijica (Gmelin) . 

 Genus Hemipuffinus Iredale. 



Hemipuffinus carneipes (Gould). 

 Genus Neonectris Mathews. 



Neonectris griseus (Gmelin). 



„ tenuirostris (Temmiuck). 



Genus Ardenna Reiohenbach. 



Ardenna leuconielas (Temminck). 



In the present collection there are representatives of the 

 genera Puffinus, Thyellodroma, Neonectris, and Puffinus 

 leuconielas. This necessitated the reconsideration of the 



