378 BIRDS FROM HAWAIIAN ISLANDS — STEJNEGER. 



Measurements. 



Bulweria bulweri (Jard. & Selb.). 

 Bnlwer'8 Petrel. 



I have but little doubt that the two birds received from Mr. Kuudsen 

 since the rest of this paper was submitted to the printer really belong to 

 this species. They make a very unexpected addition to the Hawaiian 

 fauna. 



As far as coloration is concerned they agree minutely with B. bulweri, 

 the greater wing-coverts being lighter than the rest of the wing, in this 

 respect differing from the original description,* and, so far as I know, 

 the only one, of B. macgillivrayi. Nor are the bills larger; on the con- 

 trary, they are somewhat slenderer; nor do the dimensions or proportions 

 differ, as the appended measurements show. The only doubt is caused 

 by the difference in shape of the nasal tube, which in the single speci- 

 men of undoubted B, bulweri at my command is swollen almost to the 

 base, while in Kuudsen's two specimens it is compressed from about the 

 middle backwards. This difference may be entirely unessential, how- 

 ever. 



The occurrence at the Hawaiian Islands of this species, which has 

 hitherto been recorded only from the Eastern Atlantic, and as occa- 

 sionally occurring in Greenland and the Bermudas, is very interesting, 

 especially as we might have expected to find B. macgillivrayi there, and 

 raises the question whether the latter, of which I think only one speci- 

 men is known, may not simply be an abnormal individual of B. bulweri. 



Measurements. 



* "Like T. Bulweri, but with the bill rather larger; and it is without the sooty- 

 brown on the wings," Gray, Cat Birds, Trop. Isl. Pac. Oc, p. 56 (1859). This diag- 

 nosis, with slight additions and measurements, is reproduced in Finsch & Hartlaub, 

 Beitr. Fauna, Central Polynes., p. 242 (1867). 



