270 Messrs. H. E. Dresser and E. Delmar Morgan on 



87. PuFFiNus GRAVIS O'Keilly. 



Ushani. When just off Usliant and Le Conquet^ and en 

 route for Molene on September 17th, six Great Shearwaters 

 were seen, either singly or in pairs, fairly close to the 

 steamer. Off the Casquets, on September 30th, one was 

 seen along with the Manx Shearwaters. 



XVI. — On new Species of Birds obtained in Kan-su by 

 M. Berezovsky. By H. E. Dresser and E. Delmar 

 Morgan. 



In 1884 Mr. M. Berezovsky went as ornithologist on the 

 expedition led by Mr. G. N. Potanin to explore North-west 

 China, and when the expedition returned, thanks to the 

 generosity of Mr, W. P. Sukatscheff, he was able to 

 continue his explorations for another year. The result 

 of his scientific labours has been embodied in a work 

 by Messrs. Berezovsky and Bianchi, in Russian, en- 

 titled ' Ptitzi Kansuskago Puteshestviya G. N. Potanina ' 

 (St. Petersburg, 1891), or 'The Birds of the Potanin Expe- 

 dition through the Province of Kan-su and the adjacent 

 Country.^ In this work six new species of birds are de- 

 scribed, but the descriptions, being in Russian only, are 

 unavailable to most Western ornithologists. Consequently, at 

 my suggestion, Mr. E. Delmar Morgan has kindly translated 

 these descriptions, and forwarded his translation to me to 

 revise for the press. It proved, however, to be too long for 

 publication in that form in ' The Ibis,^ and I have therefore 

 undertaken to condense it and bring it into such shape as to 

 enable the Editors of this Journal to accept it. Fortunately, 

 of these six species there are co-types of two ( Trochuhipterum 

 sukatscheivi and Poecile davidi) in the Tring Museum, which 

 have been placed at my disposal by the Hon. Walter Roth- 

 schild for examination and description. The descriptions of 

 the other four species are translated from the Russian. — 

 H. E. D. 



