173 Recently published Ornithological Works. 



that Prof. Cope has described at different times three alleged 

 species of Turkey — M. antiquus, M. alius, and M. celer. 



24. Stolzmann on the Birds of Ferghana. 



[Oiseaux de la Ferghana d'apres les recherches faites par M. Thomas 

 Barey (1892-1895). Par Jean Stolzmann. Bull. Soc. Imp. de Natural. 

 Moscou, 1897, no. 1, p. 54.] 



M. Stolzmann writes on the birds collected in the Trans- 

 caspian province of Fergliana by M. Thomas Barey of the 

 Museum Branicki of Warsaw, and refers them to 189 species. 

 Of these four are now for the first time introduced into the 

 list of species of the Russian Empire — namely, Cocco- 

 thraustes humii, Pyrrhospi;2a punicea humii, Carpodacus 

 grandis, and Culumba leuconota. 



25. Townsend on a new American Eagle. 



[Description of a new Eagle from Alaska and a new Si^uirrel from 

 Lower California. By C. H. Townsend. Proc. Biol. Soc. "Washington, 

 xi. p. 145.] 



The Alaskan form of Halia'etus leucocephalus is separated 

 subspecifically as being '^ considerably larger/' under the 

 name H. I. alascanus ! 



26. Whit lock on the Migration of Birds. 



[The Migration of Birds : a Consideration of Ilerr Gatke's Views. By 

 F. B. Whitlock. 8vo. London : R. H. Porter, 1897.] 



The majority of working ornithologists were well aware 

 that the great value of the Jale Herr Gatke's work consisted 

 in his personal observations on Heligoland, and they also 

 knew that he could not be trusted with regard to figures. 

 ]Mr. Whitlock has chosen to analyse the " billions/' " mil- 

 lions," " myriads," '^ velocity of flight," &c., of the octo- 

 genarian with perfect seriousness — a task from which older 

 ornithologists haveslirunk ; and if his remarks have given pain 

 here, they have, on the other hand, given pleasure to some 

 readers in America. As regards the much-discussed Northern 

 Bluethroat, JMr. Whitlock should know that there is no 



