56 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH Ser. 
Dr. Godman remarks in his monograph that “it is by no 
means unlikely that CZ. incerta may be only the dark phase 
of G. lessoni.’”* 
With the light of the manuscript description of Procellaria 
sandaliata Solander, Mr. T. Iredale identifies Procellaria in- 
certa Schlegel as a synonym of Procellaria alba Gmelin.’ 
However, a specimen (No. 24332 Carnegie Mus.) of an 
intermediate phase of Pterodroma neglecta (Schlegel) from 
the Kermadec Islands agrees well with Latham’s descrip- 
tion of his White-breasted Petrel, upon which Procellaria 
alba Gmelin was based. In view of this discrepancy, I am 
of the opinion that Dr. Schlegel’s type specimens (extant in 
the Leyden Museum) and original descriptions of P. incerta 
and P. neglecta are a surer means of determining the names 
of the two birds in question than the eighteenth century de- 
scriptions; in consequence, Pterodroma incerta (Schlegel) 
and Pterodroma neglecta (Schlegel) are retained. 
Pterodroma neglecta (Schlegel): NEGLECTED PETREL 
Pterodroma rostrata (Peale): THICK-BILLED PETREL 
Cours—strelata rostrata, IV, 144, 170. 
SaLtvin—CE strelata rostrata, 398, 
GopMAN—Cistrelata rostrata, xlvi, 190, pl. 51. 
Pterodroma parvirostris (Peale): SMALL-BILLED PETREL 
Pterodroma magente (Giglioli & Salvadori): MAGENTA 
PETREL 
SaLvin—CE strelata magente, 407. 
GopMan—CEstrelata magente, xlvi, 203, pl. 55. 
The status of Pterodroma rostrata, P. parvirostris, and P. 
magente can be satisfactorily determined only when a series 
of specimens showing the alleged specific characters, has been 
collected and studied. | 
1 Mon. Petrels, p. 196. 
4Ibis, 1913, p. 132; cf. Mathews and Iredale, Ibis, 1913, p. 231, Mathews, Birds Austr..,. 
v. 2, pp. 149-151. 
