Recently published Ornithological Works. 121 



3. Berg's Oological Notices. 



[Comunicaciones Oologicas por el Dr. Carlos Berg, Director del Museo 

 Nacional de Buenos Aires. An. Miis. Nac. Buenos Aires, v. p. 33.] 



Dr. Berg casts scorn upon the supposed new diminutive 

 Rhea [R. nana) which Mr. Lydekker has lately established 

 on an egg in the La Plata Museum obtained in Patagonia 

 {cf. Rev. Mus. La Plata, vi. p. 103 (1895) ; Ibis, 1895, 

 p. 171), and is of opinion that the e^^ in question is only a 

 " cock^s-egg " o£ R. darwini. He has seen similar eggs of 

 R. americana. Dr. Berg also describes the egg of Crax 

 sclateri (which, misled by the author of the 22nd volume of 

 the B. M. Catalogue, he calls C. fasciolata) and an abnormal 

 clutch of eggs of Vanellus cayennensis. 



4. Bladen on the Cuckoo and its Foster-Parents. 



[The Cuckoo and its Foster-Parents. — Being a Portion of the Annual 

 Address delivered to the Members of the North Staffordshire Naturalists' 

 Field Club and Archaeological Society. By W. Wells Bladen, Presi- 

 dent. Keprinted from the Trans. North Stafford. Nat. Field Club, March 

 1896.] 



Mr. Bladen's address contains an account of the principal 

 facts hitherto ascertained as to the breeding-habits of the 

 Common Cuckoo [Cuculus cajiorus), and concludes with a 

 complete list of the 145 species of birds in the nests of which 

 it has been known to deposit its eggs. 



5. Bilttikofer on a probably new Tinamou. 



[On a probably new Species of Crypturus. By Dr. J. Bilttikofer. 

 Notes Leyd. Mus. xviii.] 



This supposed new species is based on a specimen lately 

 living in the Zoological Garden of Amsterdam, and stated 

 to have been received from Argentina. It is very closely 

 allied to C. tataupa and C. parvirostris. 



6. Bilttikofer on the Genus Pycnonotus and its Allies. 



[On the Genus Pycnonotus and some allied Genera, with Enumeration 

 of the Specimens in the Leyden Museum. By J. Bilttikofer, Notes 

 Leyd. Mus. xvii. note 32.] 



Dr. Bilttikofer gives us a revision of the species of Pycno- 

 notus and of 20 of the allied genera based upon the specimens 



