96 NEW PETREL FROM SANDWICH ISLANDS. 



by various authors, that it may possibly prove to be a distinct species ; 

 but in the absence of an opportunity for comparing it with specimens 

 of the latter I refrain from expressing an opinion in the matter. 



Additional note. — Since the above was snbmitted for publication 

 the writer has examined a good series of ^. ha\sitata, and has been 

 thereby led to adopt the generally accepted view of the specific iden- 

 tity of this species and Frocellaria meridionalis Lawr. The latter rep- 

 resents a special phase, but whether an individual variation or di pend- 

 ent on difference of age cannot at present be determined. The series in 

 question removes all possible doubt as to the status of ^. sandwichen- 

 sis, but I now have a suspicion that the latter is the same as JE. plufi- 

 opi/gia Salv. (Trans. Zool. Soc. Lond., vol. ix, part ix, May, 187G, p. 507, 

 pi. 88, fig. 1), from the Galapagos. At any rate, the two should be care- 

 full;\' compared. 



