BULWERIA. 69 
Genus BULWERIA Bonaparte. (Page 54, pl. XIV,, fig. 5.) 
Species. 
Common Cuaracturs.—Plumage entirely dusky sooty brownish darker on 
upper parts. 
a’. Greater wing-coverts rather light sooty grayish brown, like lower parts; above 
dark sooty brown, paler on greater wing-coverts, nearly black on lesser wing- 
coverts and quills; lower parts uniform sooty grayish brown. Downy young: 
Uniform dark sooty brown. Length about 10.00, wing 7.70-8.00, tail 4.50- 
4.75, graduated for 1.45-1.75, culmen .85-1.00, tarsus .90-1.10, middle toe .95. 
igg 1.73 x 1.22. Hab. Eastern Middle Atlantic, chiefly in the vicinity of 
the Canaries and Madeira; accidental at Bermudas and near coast of Green- 
land: North Pacific..... 101. B. bulweri (Jarp. & SeLpy). Bulwer's Petrel. 
a’. Greater wing-coverts blackish, like rest of wings. (“Like T. bulweri, but with 
bill rather larger; and it is without the sooty brown on the wings.”—GRay.) 
South Pacific Ocean (Fiji Islands). 
B. macgillivrayi (GRay), Macgillivray’s Petrel.! 
Genus DAPTION Srepuens. (Page 55, pl. XIL, fig. 3.) 
Species. 
Lower parts (except chin and throat), rump, upper tail-coverts, and basal two- 
thirds of tail, together with greater portion of scapulars and secondaries, white; back, 
rump, and upper tail-coverts, marked with triangular spots of dark sooty plumbeous ; 
wing, except as described, chiefly sooty plumbeous, as is also the terminal third of 
the tail; bill deep black ; length about 15.00, wing 10.25-11.00, culmen about 1.25. 
Hab. Southern seas in general, north, on Pacific coast of America (accidentally 
Only 7) 10 CalifOrnta «sa. scpensesodernvnveie 102. D. capensis (Linn.). Pintado Petrel. 
Genus HALOCYPTENA Couzs. (Page 56, pl. XII, fig. 4.) 
Species. 
Plain sooty blackish, lighter and more brownish on lower parts, middle and 
greater wing-coverts, and fore part of head; bill and feet uniform black; length 
about 5.75, wing 4.80, tail 2.50, the outer feathers 40 shorter; culmen .45, tarsus 
.85, middle toe .60. Hab. Coast of Lower California to Bay of Panama. 
103. H. microsoma Cours. Least Petrel. 
Genus PROCELLARIA Linnaus. (Page 56, pl. XVII, fig. 4.) 
Species. 
Common Craracters.—General color sooty blackish, paler or more sooty 
grayish below, the upper tail-coverts white; bill and feet wholly black. 
1 Thalassidroma (Bulweria) Macgillivrayi G. R. Gray, Cat. Birds Isl. Pacific, 1859, 56. 
