NATATORES — PROCELLARID^E — DIOMEDEA. 289 



(EXTRA -LIMIT AL .) 



P. anglorum, Ray. (Add. B. of A. Vol. 7, p. 214, pi. 457.) Bill very slender, much incurved 

 at the tip, 1 -6 long. Tarsus 1 *8. Tail rounded, of 12 feathers. Brownish black ; beneath white. 

 Length, 15 '0. Sable Island. Coast of Maine. 



Genus Diomedea, Linnccus. Bill longer than the head, very robust and hard, deeply seamed on each 



side, strongly hooked at the point. Lower mandible smooth : palate with serrated processes. 



Nostrils in distinct tubes on the sides of the bill. Feet stout, short. Tarsus a fourth shorter 



than the middle toe : no rudiment of hind toe or nail. 



D. fusca, Bonap. (Albatross, Aud. B. of A. Vol. 7, p. 200, pi. 454.) Uniform dusky: bill black; feet 



yellow. Ridge of the bill carinate, entering the forehead in an acute angle. Length, 34-0. 



Columbia river. 



D. nigripes. (Aud. lb. p. 198.) Sooty-brown; beneath grey: feet black. Ridge of the bill broad 



and convex. Length, 36 "0. California. 

 D. chlororhyncos, Gmel. (Aud. lb. p. 196.) Bill compressed, convex above, black above, yellow 

 beneath; feet yellow: head and neck ash-grey ; beneath white. Length, 37-0. California. 



Genus Procellaria, Linnmus, Bonaparte. Bill as long as the head, stout, broad and hard; lower 

 mandible straight, somewhat truncated at the tip : mental angle projecting. Nostrils in a single 

 tube. First quill longest. Hind toe merely a thick and obtuse nail. 



P. glacial is, Linn. (Aud. 1. c. Vol. 7, p. 204, pi. 455.) White; back and wing-coverts bluish grey; 

 bill and feet yellow. Tail conical. Summer, a dusky spot before the eye. Young, pale cine- 

 reous, varied with brown. Length, 17 "0. Northern regions. Oceanic. Occasionally on the 

 coast of the United States- 



P.pacifica. (Aud. 1. c. Vol. 7, p. 208.) Head, neck and beneath white. Nasal tube straight ; its 

 ridge distinctly carinate. Length, 18-0. Northwest coast. 



P. tenuirostris (Aud. 1. c. p. 210.) Bill more elongated and slender than the preceding; 2-0 long. 

 Color of the preceding. Length, 18*5. An. var. ? Columbia river. 



[Fauna — Part 2. J 37 



