BULWER'S STORM PETREL. 257 



maritime in habits, and possess an extraordinary 

 developement of wing; these have been formed by 

 Mr. Vigors into the 



GENTJSTHALASSIDROMA, Vigors. Generic charac- 

 ters. Bill short, maxilla hooking downwards 

 at the tip ; mandible slightly angulated, follow- 

 ing the curve of the maxilla ; nostrils in one 

 tube, showing two orifices ; wings long, accu- 

 minated, second quill longest, third nearly 

 equalling it ; feet rather small, outer toe slightly 

 longest ; tarsi long and slender ; hallux a small 

 sharp dependent claw. 



Types. T. leachii, pelagica, wilsonii, fyc* Cos- 

 mopolite. 



Note. Habits entirely maritime ; breed in bur- 

 rows ; flight swift ; " run upon the waves ;" size 

 small ; colour black. 



BULWER'S STORM PETREL, THALASSIDROMA BUL- s 

 WERIJ T ard. and Selby. Procellaria Bulwerii, 

 Jard. and Selby. Illust. of Orn. Gould, Birds of 

 Europe. Mr. Gould, in the last number of his 

 European Birds, writes, " On the authority of 

 Colonel Dalton of Henningford, near Ripon, we are 

 enabled to add this rare species to the Fauna of 

 Britain, from a fine specimen which was found on 

 the banks of the Ure, near Tanfield, in Yorkshire, 

 on the 8th of May 1837, and which could not have 

 been long dead, as it admitted of being mounted as 



R 



