2/8 VERTEBRATES I BIRDS. 



seven and a quarter inches 

 long, the wing six inches ; 

 color dark sooty -brown, 

 rump white; tail slightly 

 emarginate. The Stormy 

 Petrel, or Mother Carey's 

 Chicken, T.pelagica, Bona- 

 parte, of the Atlantic, is five 

 and three quarters inches 



Leach's Petrel, T. Leachii, Temm. long, and the wing five 



inches; color grayish black above, sooty brown below, 

 rump white. 



The Genus Fregetta is represented by Lawrence's Black 

 and White Stormy Petrel, F. Lawrencii, Bonap., of the 

 Florida coast, which is eight inches long. 



The Genus Puffinus has the bill compressed near the 

 end, and a straight spur in place of the hind toe. 



The Greater Shearwater, P. major, Faber, of the Atlan- 

 tic, is twenty inches long, the wing thirteen and a quar- 

 ter inches ; brownish ash above, grayish white below. 



The Sooty Shearwater, P. fuliginosus, Strick., of the 

 Atlantic ; Mank's Shearwater, P. anglorum, Temm., of the 

 coast from New Jersey to Labrador ; the Dusky Shear- 

 water, P. obscurus, Lath., of the Southern coast of the 

 United States ; and the Cinereous Petrel, P. cinereus, Gm., 

 of the Pacific, are additional species. 



LARID.E, OR GULL FAMILY. This Family comprises 

 swimming birds which have the bill generally shorter 

 than the head, straight at the base, more or less curved 

 at the tip, nostrils linear, and wings long and pointed. 

 They frequent the shores of all countries, and also wander 

 far inland. They swim with facility, but do not dive. 

 They feed upon fish, shell-fish, and other aquatic animals. 



The Genus Stercorarius comprises the Skua Gulls, or 

 Jagers, hardy birds, about twenty inches long, of the north- 



