Recently published Ornithological Works. 71 1 



reichenowi from the Rio Tocantiiis ; Chloronerpes paraensis 

 from Para ; Thamnophilus kiiheri from the Rio Tapajciz ; 

 Dysithamnus capitalis squamosus from the Tocantins ; Anaplops 

 berlepschi from the Tapajoz; Grallaria maciilaria berlepschi 

 from the Tocantins ; Xiphorhynchus multostriatus from the 

 Tocantins; Myiobius erythrurus hellmayri from Para; Eu- 

 scarthmus johannis from the R\o Purus ; E. znsterops minor 

 from the Tocantins ; Euscarthmus griseipectus from the 

 Tocantins; Setophaga jJallidti from the Tocantins; Pipra 

 fasciata purusiana from the E,. Purus ; Pachysylvia musci- 

 capina from the Tapajos ; and Sporophila leucoptera aqua- 

 torialis from Mexiana. 



We venture to remark that some of the characters which 

 are given to separate the subspecies are rather finely drawn. 

 But we much rejoice that the authorities of the Goekli 

 Museum are continuing to work out the products o£ the 

 vast region of the Amazon and its affluents. 



105. Stone on the Cuckoos of the Genus Piaya. 



[A Review of the Genus Piaya, Lesson. By Witmer Stone, Pr. Ao. 

 N. Sc. Philad. (1908).] 



In re-arranging the Cuckoos in the great Collection of 

 Birds at Philadelphia Mr. Stone was induced by the discovery 

 of the neglected type of Piaya macroura to undertake a 

 study of all the species of that genus. Two species of Piaya 

 are unmistakable — P. melanogastra and P. minuta (called 

 by Mr. Stone P. rutila). But P. cay ana and its near allies 

 form a very puzzling group. To enable him to understand 

 them better Mr. Stone borrowed examples from other 

 American Collections, and thus got together a series of 259 

 specimens, which gave him a good basis to work upon. 

 The result is that Piaya cayana, according to him, is 

 divisible into 11 representative subspecies, two of which 

 (P. c. cauccB and P. c. boliviana) are now described for the 

 first time. 



Mr, Stone wishes to change the name of Piaya minuta to 



