Recently publislwd OrnitJioIoj'icul JVorks. 763 



92. Madardsz on new Birds from Africa. 



[Neue Yogel aus Afrika, beschrieben von Dr. J. v. Madarasz. Ann. 

 Mils. Nat. Ilungar., 1911.] 



The new species described are Ujmpa butleri, Riparia 

 nigricans, Cisticola siidanica, Passer alexandrinus, P. nikei'- 

 soni, and P. albiventris. It is certainly curious to discover 

 a new Sparrow at Alexandria, especially if, as is stated, 

 Passer domesticus also occurs in the same district. 



93. Madardsz on Two Humming-birds. 



[Ueber Thalurania venusta (Gould) und Colibri cahanidis (Heine) als 

 selbstiindige Fonneu. Vou Dr. J. v. Madardsz. Ann. Mas. Nat. 

 Huiigar., 1911.] 



The author is of opinion that Thalurania venuata (Gould) 

 of Central America has been incorrectly united to T. coliim- 

 bica (Bourc.) of Colombia and Venezuela, and that tlie 

 two species are quite distinct. He also maintains that 

 Colibri cabanidis of Costa Rica ought not to be united with 

 C. cijanotis of Colombia and Venezuela. 



9J<. Mathews on Alterations in tlie Numendalare of 

 Birds. 



[On some necessary Alterations in the Nomenclature of Birds, Part II. 

 By Gregory M. Mathews, Nov. Zool. xvii. p. 503.] 



This is a continuation and completion of the author's 

 previous article on the same subject, which we have already 

 noticed (above, p. 392) ; it contains large additions to the 

 list of proposed changes in the nomenclature of birds. 

 Mr. Mathews gives us no less than 22 pages of them and 

 the explanatory remarks. It seems to us to be a mistake to 

 insist on these changes unless the retention of the generally 

 adopted names is likely to cause confusion. 



INIr. jMathews is ready to adopt " Brisson's " names, but 

 rejects those of " Gronow," while he gives some important 

 information with regard to the dates of certain works of 

 Lesson, Swainson, Cuvier, and Vieillot. 



