PUFFIM'S. 59 



«'. JS'ostrils completely visible from above, the nasal tubes depressed and bevelled 

 anteriorly, where narrower tbuii at base; under wing-covcrts white, or else 

 lower parts also dusky. 

 P. Tail much less than half the wing, slightly rounded, or modcratclj- gradu- 

 ated (the graduation not more than two-thirds the length of the tarsus). 

 (Subgenus Puffinus.) 

 d. Lower parts white. 



d\ Wing more than 12.00. 



e". I\o distinct lino of demarcation between white of throat, etc., 

 and smoky gi'ay of top and sides of head and neck ; bill 

 yellowish ; above brownish gray, feathers of back, etc., 

 tipped with paler; sides of head and neck transversely 

 undulated with ash-graj' and white. 

 /'. Lower tail-coverts entirely white. 



g\ Length about 18.00, wing 13.00-14.00, culmen 1.80- 

 2.00, depth of bill through base .65-.70, tarsus 1.85- 

 2.00, middle toe 2.10-2.25. Downy young : Uni- 

 form sooty grayish brown. ITab. Middle eastern 

 Atlantic ; a specimen from Greenland said to be 

 in Leyden Museum {cf. Schleg. Mus. P.-B., Pro- 

 cellariw, 1863, p. 24). 



P. kuhlii (Boie). Cinereous Shearwater.' 

 gf^ Length about 20.00-22.00, wing 13.75-14.50, culmen 

 2.10-2.25, depth of bill at base .75-.S0, tarsus 2.20- 

 2.25, middle toe 2.45. Hah. 'Western North At- 

 lantic (off coast of Massachusetts). 



88. P. borealis Coey. Cory's Shearwater. 

 /'. Lower tail-coverts uniform dark sooty grayish. 



Length 19.00, wing 12.50-13.25, culmen 1.60-1.70, 

 depth of bill through base .65-.75, tarsus 2.05-2.12, 

 middle toe 2.15-2.40. Hah. Eastern Pacific Ocean 

 from California to Chili. 



91. P. creatopus Coies. Pink-footed Shearwater. 



e". White of throat, etc., separated very abrupth- from the dusky 



color of top and sides of head and neck ; bill blackish. 



Above smoky graj-ish brown, feathers of back, etc., with 



paler tips ; longer upper tail-coverts mostly white ; 



belly more or less clouded with smoky gray, the flanks 



and lower tail-coverts mostly grayish brown ; length 



19.00-20.00, wing 11.50-13.00, culmen 1.80-1.85. Hah. 



Atlantic Ocean generally. 



89. P. major Faber. Greater Shearwater. 

 dP. Wing less than 10.00. 



r". Above sooty slate, without white tips to wing-coverts, etc. 



1 For references, see A. 0. U. Check Lbt, p. 360. 



