826 
U. S. P. R. R. EXP. AND SURVEYS ZOOLOGY GENERAL REPORT. 
These birds abound in tbe North Atlantic ocean, also in the large bays and straits ; they are 
constant attendants upon the whalers, and when the process of cutting up a whale commences 
they assemble in immense numbers, and are so greedy and fearless, at such times, as to approach 
within a few yards of the men engaged in the work. 
List of specimens. 
Locality. 
Whence obtained. 
Original No. 
North Atlantic - --- 
George N. Lawrence 
1014 
PEOCELLAEIA 
PACIFICA, Audubon. 
The Pacific Fulmar. 
Procellar 
a pacifica, Aud. Orn. Biog. V, 1839, 331.— Ib. Birds Am. VII, 1844, 208. 
Fulmarus 
glacialis, var. C. pacifica, Bon. Cons 
p. 11, 1855, 187. 
St. Cn.—Mvlt. 
Back and wings light grayish blue ; 
the feathers largely terminating with brownish gray • 
primaries and 
coverts blackish brown tinged with gray ; tail brownish gray, white at the base ; head, neck, and under plumage, pure white ; 
bill, tarsi and feet, yellow. 
Length, 18 inches; wing, 12f ; tail, 4j ; bill, 1J ; tarsus, 1J-J. 
Young of a uniform brownish gray ; a dark spot before the eye ; primaries brownish black ; bill and legs yellow. 
Hib. — Pacific coast of North America. 
The type specimens are now in the cabinet of Prof. Baird, by whom they have been transmitted 
to me for examination. 
Differs but little in form and size from the Atlantic bird, but the bill is rather smaller, with 
the unguis narrower and much weaker ; the nasal case differs in having its ridge distinctly 
carinato, and its upper outline straight. Bonaparte considers it as merely a variety of the 
P. glacialis. 
List of specimens. 
Catal. No. 
Locality. 
Whence obtained. 
Collected by— 
Wings. 
2750 
2751 
S. F. Baird 
J. J. Audubon 
12. 50 
12. 25 
Thalassoica, Reich. 
PRO CELL ARIA TENUIROSTRIS, Audubon. 
The Slender-billed Fulmar. 
Procellaria tenuirostris, Aud. Orn. Biog. V, 1839, 333.— Ib . Birds Amer. VII, 1844, 210. 
Tliatassoica glacialoides, var. 6. tenuirostris, Bon. Consp. II, 1855, 192. 
Sp. Cn.—JIdult. Back and wings clear grayish blue ; tail of the same color, but rather lighter ; primaries brownish black on 
phe outer webs and on the inner at the end, remainder of inner webs white ; secondaries dark bluish gray on the outer web and 
ture white on the inner; front, top, and sides of the head, neck in front, and under plumage, white ; sides under the wing 
