1 92 1.] Recently published Ornitholoijical IVorks. 331 



It is iuteresting" to observe that ou the soutli-west coasts of 

 Africa^ where conditions are very similar, the same course 

 has been adopted, though there tlie control of the islands is 

 directl}^ under the government of the Union of South Africa. 



Tiie three most important guano-producing birds are the 

 Alcatraz (Pelecanus thagus), the Piquero {Su.la variegata), 

 and the Camanay {Sii.la vehoiuvi). Of these, and of the 

 methods and operations of obtniuing the gnauo, Mr. Murphy 

 has given a most lucid account illustrated by numerous and 

 beautifully reproduced {)hotograplis, and the articles are 

 well worthy of perusal by all those interested in the in- 

 dustrial application of ornithology. 



To his two predecessors in the investigation of the guano 

 islands, Dr. H. O. Forbes and Mr. R. E. Coker, of the 

 United States Bureau of Fisheries, Mr. Murphy pays a 

 well-deserved tribute. An interesting discovery is that 

 these seas are the winter home of the Northern or Red- 

 necked Phalarope {Pluilaropus lobatiis) ; its winter quarters 

 in the New World had been hitherto unknown. 



Peters on. a new Jay. 



[A new Jay from Alberta. By James Lee Peters. Prno. New 

 Englaud Zoul. CI. vii. 1920, pp. 51-52.] 



Mr. Peters describes Perisoreus canadensis albescens as a 

 distinct race from Red Deer, Alberts, Canada. It is distin- 

 guished from all the other races of the Canada Jay by its 

 much paler coloration. The type is in the Museum, of 

 Comparative Zoiilogy at Cambridge, Mass. 



Ridgway on neiv Genera of Birds. 



[Diagnoses of some new Genera of Birds. By Robert Ridgwav. 

 Smitlison. Miscel. Coll. Washington, vol. Ix.xii, no. 4, 1920, pp. 1-4.] 



The following new Genera of Hawks and Rails are 

 proposed, no doubt in anticipation of a forthcoming volume 

 of the 'Birds of North and Middle America' : — Oroa'etus 

 for type Spizaetus isidori (Vieill.) ; Phceoaetus for type 



7.2 



