588 Recently published OrnithoLoyicul Works. [ibis;, 



is now completed. It contains a great deal of additional 

 matter^ as it consists of 233 pages against 164 and many 

 corrections and improvements, and will undoubtedly prove 

 of great use to all systematic workers, and especially to 

 students of the Birds of Prey. The type-species of the 

 genera are now given and the type-localities of the species, 

 both of which greatly increase the usefulness of the work. 

 There are a good number of new subspecies described in the 

 Synopsis itself, in addition to those recently proposed in the 

 'Auk' and the Bull. B. O. C, to which attention should be 

 directed. We notice the Desert Buzzard, formerly known 

 as Buteo desertorum — so common in Africa in winter, now 

 stands as B. vulpinus vulpinus Gloger, and is regarded as a 

 distinct species from B. buteo buteo, while the curious foi'cst 

 Buzzard of eastern Europe becomes B. v. intermedius Menz. 

 vice B. zimmermanrKB Ehm. 



Stvarth on a new race of the Dusky Grouse. 



[The Sitkau race of the Dusky Grouse. By H. G. Swarth. Condor, 

 xxiii. 1921, pp. 59-60.] 



The hen of the Dusky Grouse of south-eastern Alaska 

 differs from thnt of Vancouver Island and farther south in 

 its more pronounced reddish tinge, and Mr. Swarth proposes 

 to name it Dendrayapus obscurus sitkensis, subsp. n. In the 

 male sex the difference from D. o. fuliginosus is inappreciable. 



Todd on the Tyrannidcs. 



[Studies in the Tyrannidfe. If. The' restricted genua Myiobius. 

 By W. E. Clyde Todd. Proc. Biol. Soc. Washington, vol. 35, 1922, 

 pp. 17-38.] 



This, the second essay of the author on the Tyrant-birds, 

 deals with the South American genus Myiobius. There is a 

 careful revision of the species and subspecies — the former 

 seven, the latter four in number — one of which, M. villosus 

 peruvianas, is new. In most cases the material on which 

 the revision is based is extensive, and the work will doubtless 

 be most useful to all students of Neotropical birds. 



