58 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4TH Ser. 
Galapagos Islands variations occur similar to those described 
by Mr. Noble, and also greater variations. 
I apprehend that 4strelata cahow Nichols & Mowbray' 
will prove to be a variation of Pteredroma hasitata. 
Pterodroma macroptera (A. Smuth): LoNG-wINGED PETREL 
Couns #sirelata macroptera, IV, 155, 171; Astrelata fuliginosa, IV, 
S77 
Satvin—Cstrelata macroptera, 398, 399. 
GopmMaN—Cistrelata macroptera, xvii, 176, pl. 46. 
Pterodroma aterrima Bonaparte: MASCARENE PETREL 
Coves—é strelata aterrima, IV, 158, 171. 
Satvin—CEstrelata aterrima, 398, 401. 
GopMaN—CEstrelata aterrima, xlviii, 179, pl. 47. 
None of the three monographers has tested by a series of 
specimens the characters assigned to P. aterrima. 
Pterodroma solandri (Gould): SOLANDER’S PETREL 
Coves—#strelata Solandri, TV, 148, 170. 
Satvin—Cistrelata solandri, 398, 410. 
GopMAaN—CEstrelata solandri, x\vii, 219, pl. 61. 
Gould’s type (preserved in the British Museum) and orig- 
inal description seem to me to be a more certain means of 
determining the specific name of this species than the Latham 
and Gmelin descriptions cited by Mr. Gregory M. Mathews.? 
Hence, Pterodroma sclandri1 (Gould) is retained and Pfero- 
droma melanopus (Gmelin) rejected. 
Pterodroma inexpectata (J. R. Forster): MottLep PETREL 
Pterodroma brevirostris (Lesson): SHORT-BILLED PETREL 
Covrs— #strelata grisea, IV, 148, 170; [P. brevirostris, TV, 156]. 
SaLvin—CEstrelata brevirostris, 398, 409. 
GopMAN—CEstrelata brevirostris, xlvii, 216, pl. 60. 
1Auk, 1916, v. 33, p. 194. 
2Cf. Birds Austr., v. 2, pp. 142-147. 
