826 



U. S. p. K. R. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 



These birds abound in the 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. 



PEOCELLAEIA PACIFICA, Audubon. 



The Pacific Fulmar. 



Procellaria pacifica, AuD. Orn. Biog. V, 1839, 331.— Ib. Birds Am. VII, 1844, 208. 

 Fulmarus glacialis, yar. C. pacifica, Bow. Consp. II, 1855, 187. 



Sp. Ch. — ^Jidult. Back and wings light grayish blue ; the feathers largely terminating with brownish gray ; primaries and 

 coverta 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, 12J ; tail, 41 ; bill, 1^ ; tarsus, IJJ. 



Young of a uniform brownish gray ; a dark spot before the eye ; primaries brownish black ; bill and legs yellow. 



H-ih. — 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 

 carinate, and its upper outline straight. Bonaparte considers it as merely a variety of the 

 P. glacialis. 



List of sjpecimens. 



Thalassoica, Reich. 

 PROCELLARIA TENUIROSTEIS, Audubon. 



The Slender-billed Fulmar. 



Procellaria tenuirostris, AtTD. Orn. Biog. V, 1839, 333. — Ib. Birds Amer. VII, 1844, 210. 

 Thalassoica glacialoides, var. ii. tenuirostris, Bon. Consp. II, 1855, 192. 



Sp. Ch. — idult. 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 



