it is quite possible the life liistoiy of the fly w ill be found to be more or 

 less modified; for the same reasons, experimental work in controlling 

 the pest may be found successful in one country, but fail in anothej-. 



It is remarkable that no definite experiments, beyond those of 

 Krassiltchik and Vitkovsky mentioned under "Pupae," appear to have 

 been made as to how far the fly can be controlled by being buried under 

 the ground in its earlier stages, especiall)^ as to whether the larva can 

 complete its feeding and pupate after the affected plant has been 

 ploughed in. 



BIBLIOGRAPHICAL REFERENCES. 



The following list gives particulars of those references indicated in 

 the text by quotation of the author's name and date of publication only; 

 where a full reference is given in the text it is not included here. Refer- 

 ences to unpublished notes contained in the Reports from Hon. Corre- 

 spondents of the Board of Agriculture are indicated in the text by the 

 Correspondent's name and date of report, and include the names of 

 Messrs G. Ramsey Bland of Oxford, F. R. Petherbridge of Cambridge, 

 A. Roebuck of Newport, Salop, and F. V. Theobald of Wye. 



AuKiviixn-s (1892). Enf. Tids. 209-224. 



Bar.anov (1912). Maferials for Sfudij of Injurious Insects of (Jovernment of Moscoiv 

 during 1912. Moscow, 1912. 



(1914). Ibid. Moscow, 1914. 



Caepenter (1909). "Injurious insects in Ireland during 1909," ]>. S. {Kcon. Proc. 



R. Dublin Soc.) 

 CoHX (1869). Abh. ScMes. Gesell. f. val. Cult. pp. 177-199. 

 Griddle (1916). Agric. Gaz. Canada, No. 6. June 1916. 

 Curtis (1860). Farm Insects. 

 Daeert and Kornauth (1914). Ber. d. k. k. landiv.-chemisch. Versurhssl. i. WieiL i, 



JaJir. 1913. 

 Dobrovliansky (1913). Pests of Field and Orchards in 1912. Kiev, 1913. 



— - — (1915). Husbandry. Kiev. 

 Fitch (1881). Proc. Ent. Soc. London, p. xxxvi. 

 Jugner (1904). Zeitschr. f. Pflanzenkrank . xiv, p. 331. 

 Krassiltchik (1912?). "Some Observations on the Swedish-fly." Leaflet of Bio. 



Ent. Station of Zenistvo of Govt, of Bessarabia. Kishinev, ? 1912. 



and Vitkovsky (1913). Rep. of Bio. Ent. Sift, of Zenistvo of GovL of Bess- 

 arabia for 1912. Kishinev, 1913. 



KuHN (1893). Ber. d. Landmrthschaft. Inst. Halle, x, 136-137. 



KuLAGiN (1913). Injurious Insects and Methods of Fighting them. Moscow, 1913. 



KuRD.JUMOv (1913). The more Important Insects Injurious to Grain Crops in Mid 



and South Russia. Poltava, 1913. 

 McDouoALL (1912). Trans. High. Agric. Soc. Scot, xxiv, 132. 



