LESTRELATA. 67 
@. Wing less than 9.50. 
Plumage sooty blackish ; wing 9.15, tail 3.82 (graduated for 
about .44), culmen 1.10, tarsus 1.46, middle toe, with claw, 
1.55. Hab. West coast of Africa 3 vicinity of Bourbon 
Island. 
48. aterrima (Scuize.). Black Petrel.! 
a’. Inner webs of primaries abruptly white for at least the inner half. 
6. Wing more than 9.00. 
c'. Back uniform grayish, brownish, or dusky. 
a. Top of head, back, ete., plain dusky. 
e. Shafts of quills whitish ; head, neck, and upper parts plain 
dark brownish gray, paler (nearly white) on throat and 
fore-neck ; breast, flanks, and under tail-coverts brownish 
gray; rest of lower parts sometimes white, sometimes 
entirely dusky ; wing 11.19-11.64, tail 3.91-4.17, culmen 
1.20. Hab. South Pacific, from Sunday Island to Juan 
Fernandez. 
4E. neglecta (ScHLEG.). Neglected Petrel.? 
é. Shafts of quills dark brown ; head, neck, and upper parts plain 
dark slaty (feathers of head and neck white beneath sur- 
face, those of back, etc., white at base); upper tail-coverts 
and tail brownish ash-gray ; lores, chin, throat, and under 
tail-coverts white, the first mixed with blackish ; breast, 
belly, sides, and flanks plain brownish plumbeous, the 
feathers pure white immediately beneath surface; thighs 
and chest white irregularly barred or vermiculated with 
deep grayish; wing 10.00, tail 4.00 (graduated for .90) 
culmen 1.02, depth of bill at base .50, tarsus 1.20, middle 
toe, with claw, 1.55. Hab. Antarctic Ocean. 
4B. gularis (PEALE). Peale’s Petrel. 
a. Top of head white, spotted with grayish. 
Back and scapulars fine bluish gray, or plumbeous; lesser 
wing-coverts slaty blackish; greater and middle coverts 
slate-gray, broadly margined with white; tail mostly 
white, irregularly barred and vermiculated with gray; 
lores, cheeks, chin, throat, middle of chest, and under tail- 
coverts immaculate pure white; a blackish spot imme- 
diately beneath eye; sides of neck and chest densely 
v. 1876, 235 (in text). dstrelata grisea Couns, Pr. Ac, Nat. Sci. Phila. 1866, 148 (ex Procellaria grisea Kunt, 
nec Latu.), Mstrelata hidderi Couns, Bull. U. S. Nat. Mus. No. 2, 1875, 28 (Kerguelen Island). 
1 Procellaria aterrima “ Verreaux,” Scutec. Mus. P.-B., Procellariz, 1863, 9. strelata aterrima 
Covzs, Pr. Ac. Nat. Sci. Phil. 1866, 158. 
2 Procellaria neglecta Scuuec., Mus. P.-B., Procellariz, 1863, 10. istrelata neglecta Cours, Proc. Ac. 
Nat. Sci. Phil. 1866, 147. ; 
8 Procellaria gularis Peay, Zoo). U. 8. Expl. Exp. 1848, 299. strelata gularie Brewsr., Bull. Nutt. 
Orn. Club, iv. 1881, 94 (part). 
