On the Genus Elaenia. 381 



to interbreed with E. cdbiceps (viz. = E. parvirostris). — 

 Zeitschr. ges. Orci., 1885, pp. 132-134. 



1887. Sclater. describes E. hypospodia from Valencia, Vene- 

 zuela; and E. flavivertex from the Ucayali. — P.Z.S., 1887, 

 p. 49. 



1888. In the Catalogue of the birds of the British Museum, 

 Vol. XIV., pp. 136-154, Sclater gives us a mono- 

 graphical account of this genus, which on the whole is a 

 very satisfactory one, but unfortunately he does not recog- 

 nise such good species as E. albivertex and E. cristata. Geo- 

 graphical forms, such as E. subpagana, E. semipagana, E. 

 riisii, E. griseogularis, E. pudica, etc., are not admitted. 

 E. incompta and E. semiflava recorded in a footnote as 

 species unknown to the author belong to other genera, 

 while three others named in the footnote prove to be valid 

 forms of Elaenia, Sclater admits twenty-four species, 

 of which E. arenarum and E. aflinis belong to other genera. 



1888. E. Bowdler Sharpe describes E. ridleyana from the 

 island of Fernando ISToronha.— P.Z.S., 1888, p. 107. 



1888. In their Biologia Centrali- Americana, Aves, II., pp. 26-28, 

 34-37, Salvin and Godinaii treat of the Central- American 

 species of Elaenia. Myiopagis is a new genus created 

 for E. placens and allies, but this genus is apparently 

 untenable. 



1889. Remarks on Individual and Seasonal Variation in a 

 large series of Elainea from Chapada, Matto Grosso, 

 Brazil, with a Revision of the Species of the restricted 

 genus Elainea. By J. A. Allen. — Bull. Am. Mus. N.H., 

 II., 3, pp. 183-208. 



In this important article Allen endeavours to point 

 out that many species of Elaenia recognised by 

 authors are untenable, being founded on individual 

 characters (seasonal or otherwise). 



His conclusions are not shared by the author of this 

 article. Although Allen had a large material before 

 him, collected chiefly at Chapada, Mattogrosso, by 

 H. H. Smith, he evidently did not understand it correctly, 

 and his series from other localities were rather insufficient, 



