Vol. XXXIV : 
"i917 | OBERHOLSER, The Genus Puffinus Brisson. 475 
knudseni Stejneger.! A careful comparison of this material reveals 
no characters for the recognition of a subspecies from the Hawaiian 
Islands or from Laysan, since the chief difference mentioned by 
Mr. Mathews as characterizing his Puffinus pacificus laysani, its 
paler upper parts, is not at all borne out by the present specimens, 
some of the examples from Laysan and the other Hawaiian Islands 
being much darker than the Bonin Islands bird. Furthermore, 
there is absolutely no difference between the light-breasted Puffinus 
pacificus laysani, described by Mr. Mathews from Laysan Island, 
and Puffinus knudseni Stejneger, from Kauai Island; hence, were 
the Hawaiian bird subspecifically distinguishable, it should bear 
the name Puffinus cuneatus knudseni Stejneger. The identity, 
however, of the Hawaiian Islands bird with true Puffinus cuneatus 
leaves the bird occurring in North America without a distinctive 
subspecific name, and we must, therefore, revert for its technical 
designation to Puffinus cuneatus; or, rather, since this species is 
generically different from the typical species of the genus Puffinus 
Brisson, we should eall it Thyellodroma cuneata (Salvin). 
In view of the changes indicated in the present paper, the North 
American species now included in the genus Puffinus will stand as 
follows: 
Calonectris kuhlii borealis (Cory). 
Ardenna carneipes (Gould). 
Ardenna creatopus (Coues). 
Ardenna gravis (O’Reilly). 
Thyellodroma cuneata (Salvin). 
Thyellodroma bulleri (Salvin). 
Puffinus tenuirostris tenuirostris (Temminck). 
Puffinus griseus chilensis Bonaparte. 
Puffinus griseus stricklandi Ridgway. 
Puffinus puffinus puffinus (Briinnich). 
Puffinus puffinus bermude Nichols and Mobray. 
Puffinus opisthomelas Coues. 
Puffinus auricularis Townsend. 
Puffinus lherminieri lherminieri Lesson. 
Puffinus assimilis baroli Bonaparte. 
1 Puffinus knudseni Stejneger, Proc. U. S. Nat. Mus., XI, November 8, 1888, p. 93 
(Kauai Island, Hawaiian Islands). 
