426 PROCELLARIIN^. 



reticulated ; hind toe extremely small, with a conical claw ; 

 interdigital membranes full. Wings very long, narrow, and 

 pointed ; tail rather short. 



1. Fulmarus glacialis. Ncyirtheim Fulmar. Bill and feet 

 gi-eenish-yellow ; back and wings pale greyish-blue ; pri- 

 mary quills and coverts blackish-brown ; the other parts 

 white. 



GENUS II, PUFFINUS. SHEARWATER. 



Bill about the length of the head, rather slender, much 

 compressed toward the end, slightly rearcuate, with the tips 

 decurved, that of the upper strong and acute; the dorsal 

 plate convex, the nostrils opening directly forwards, with 

 two distinct apertures ; lower mandible without a distinct 

 angle at the symphysis. Legs of ordinary length ; tarsus 

 compressed ; hind toe represented by a straight claw ; inter- 

 digital membranes full. Wings very long, narrow, and 

 pointed ; tail rather short, rounded. 



1. Puffinus cinereus. Cinereous Sheartoater. Length 

 about eighteen inches ; bill two inches ; tarsus two inches or 

 more ; tail graduated. 



2. Puffinus Ancjlorum. Manx Shearwater. Length 

 about fifteen inches ; bill an inch and two-thirds ; tarsus an 

 inch and three-fourths ; tail rounded, 



GENUS III. THALASSIDROMA. STORM-PETREL. 



Bill shorter than the head, slender, much compressed 

 toward the end, the tips decurved, that of the upper pointed j 

 the nostrils opening directly forwards by two approximated 

 tubes ; lower mandible with its dorsal line declinate and 

 concave. Legs rather long or moderate, very slender, little 

 compressed, reticulate ; hind toe extremely diminutive, with 

 a small conical claw ; anterior toes rather long, slender ; 

 interdigital membranes emarginate. Wings very long, nar- 

 row, with the second quill longest ; tail rather long, various 

 in its termination. 



1 . Thalassidroma Bulwerii. Bulwer^s Storm - Petrel. 



