815. 
816. 
3822. 
817. 
778 SYSTEMATIC SYNOPSIS.— LONGIPENNES. — TUBINARES. 
Atlantic, swarming at some of its favorite br@ing places, especially St. Kilda, wide ranging at 
other seasons; S. to U. S. in winter. Nest on crags over the sea; egg single, white, with 
rough brittle shell, resembling a hen’s egg in size and shape; young covered with whitish 
down; fed in the nest by regurgitation of an oily fluid. The fulmars are very greedy of fatty 
substances, and constantly attend the whale-fishery to feed upon the blubber. 
F. g. pacificus. (Lat. pacificus, pacific.) Paciric FuLMAR. Averaging darker than No. 
814, the mantle bluish-cinereous rather than pale pearly-blue; the bill rather weaker and 
less strongly hooked. N. Pacific, in vast numbers. Changes of plumage, habits, ete., the 
same as those of the common species. 
F. g. rod/gersi. (To Comm. John Rodgers, U. 8. N.) RopGers’ Futmar.. The mantle 
dark, as in pacificus, but much restricted, most of the wing-coverts and inner quills being 
white; primaries mostly white on inner webs, their shafts yellow. Size and shape as before. 
N. Pacific, swarming on some of the rocky islands in Behring’s sea. Nest on the crags ; 
single egg white, nearly equal-ended, rough with innumerable pits and points, 2.90 X 1.90; 
chick hatches like a puff-ball of white down. 
PRIOCEL'LA. (Prion + Procella.) GuLtu Futmars. Character of Fulmqrus proper ; 
bill little shorter than head or tarsus, about 2 the middle toe and claw, compressed, higher 
than broad at base, not very robust, sides regularly tapering to rather narrow tip; grooves 
not so well marked as usual; hook moderate ; commissure a little curved; outlines of inferior 
mandibular rami and gonys both slightly concave; nasal tube 4-2 the culmen, depressed at 
base, high and narrow at end. Feet, wings, and tail as in Fulmarus. Two species; ours 
curiously resembling a gull. 
P. tenuiros'tris. (Lat. tenwirostris, slender-billed. Fig. 524.) SLENDER-BILLED FULMAR. 
Adult ¢ Q : Plumage white, with clear pearly-blue mantle, and black primaries, just like a 
SS 
WX 
SN 
Fia. 524, —Slender-billed Fulmar, nat. size. (From Elliot.) 
gull; the mantle beginning faintly on the nape, continuing over whole back, rump, tail, wing- 
coverts and inner quills; edge of the wing slaty-gray; primaries black, their shafts yellowish- 
white at base, their inner webs pearly-white to near the ends; white of first primary extending 
to within two inches of the tip, further on the rest successively, reaching the end on the 6th; 
outer webs of secondaries slaty-black, inner white; a small dusky spot before eye; a faint 
pearly shade on sides of breast and body. Bill and feet (dry) yellow; nasal tube and hook 
obscured with bluish horn-color. Length about 18.50; extent about 36.00; wing 13.00 ; 
tail 5.25; tarsus 2.00; middle toe and claw 2.60; outer do. 2.70; inner do. 2.25; chord of 
