133 Recently published Ornithological Works. 



working them out. In the meanwhile four species believed 

 to be new are described under the following names : — Necta- 

 rinia filiola, Burnesia reichenowi, Bradypterus alfredi, and 

 Pratincola emmcB. 



10. Holtz on the Irruption of Syrrhaptes of 1888. 



[Ueber das Steppenhulin, Syrrhaptes paradoxus, 111., und dessen zweite 

 Masseneinwanderung in Europa im Jahre 1888. "Von Ludwig Holtz. 8vo. 

 Berlin, 1890.] 



This is in continuation of the author^s memoir on the 

 same subject published at Greifswald in 1888. He now 

 finds it expedient to preface this account of his later 

 investigations by more than twenty pages of extracts from 

 various writers, and especially from Radde, Avhich have 

 been known to our readers for upwards of a quarter of 

 a century (Ibis, 1884, pp. 188-190). The most important 

 part of the present treatise is that (pp. 40-50) in which 

 he exposes the untrustworthiness of many reports of the 

 breeding of Pallas' s Sand-Grouse in Germany, and then 

 (pp. 51-57) recounts the very few instances in which there is 

 good evidence of its having laid eggs in that country in 1888 ; 

 but, through omission of the customary quotation marks, it is 

 often hard to make out whether Herr Holtz is speaking from 

 his own experience or from that of others. The precise number 

 of eggs found in the Empire is given (p. 64) astwo sets of three 

 each, with two single eggs in Schleswig-Holstein, and a single 

 egg in Hanover; but in no case was a young bird observed. 

 The rest of the treatise is occupied by an enumeration of 

 occurrences observed in 1889, and a general summary of the 

 whole. 



11. Hume and Oates's Nests and Eggs of Indian Birds. 



[The Nests and Eggs of Indian Birds. By Allan O. Hume, C.B. 

 Second Edition, by Eugene Gates. Vols. II., III. With eight Portraits. 

 Pp. 420 and pp. 461. 8vo. London, 1890, R. H. Porter.] 



Mr. Gates, we are glad to say, has found time to finish 

 his new edition of Mr. Hume's ' Nests and Eggs of Indian 

 Birds ' before his return to India, and vols. 2 and 3, com- 



