314 



The JapancFe beetle [Popillia japonica] quarantine has been extended 

 since 1st October 1920 to inchule the extension of the pest in New 

 Jersey and its spread into Pennsylvania. This quarantine provides 

 for the movement under inspection and certification of all the articles 

 brought under restriction. 



CoAD (B. R.) & Cassidy (T. P.). Some Rules for Poisoning the Cotton 

 Boll Weevil. — U.S. Dept. Agric, Washin^ion, D.C., Dept. Tire. 

 162, January 1921, 4 pp. [Received 16th\\pril 1921.] 



This paper briefly states the information required by farmers 

 when considering the advisability of poisoning the cotton boll weevil 

 {Anthonomus grandis) and the best means of carrying out the work. 



CoAD (B. R.) & MoRELAND (R. W.). Dispeision of the Boll Weevil 

 in 1920.— C/.5. Dept. Agric, Washington, D.C., Dept. Circ. 163, 

 2nd January 1921, 2 pp. [Received 16th April 1921.] 



During 1920 the movement of the boll weevil [Anthononms grandis] 

 has been retarded in the eastern portion of the cotton belt, but a large 

 portion of territory has been reinfested in Oklahoma and Texas. 

 Altogether 42,621 square miles of new territory have been invaded in 

 1920, and only 752 square miles were freed, this occurring in Tennessee. 

 Only about 73,000 square miles of cotton-producing territory remain 

 uninfested. The extent of infestation in each State is briefly dealt 

 with. Considering the cotton-producing States as a whole, an average 

 of only 16-2 per cent, of the total cotton crop is produced on uninfested 

 territory. 



Urbahns (T. D.). Grasshopper Control in the Pacific States. — 



U.S. Dept. Agric, Washington, D.C., Farmers' Bull. 1140, 

 October 1920, 16 pp., 11 figs. [Received 27th April 1921.] 



The most common species of grasshoppers are described and remedial 

 measures are discussed, of which poisoned bran mash has proved the 

 mpst successful [cf. R.A.E., A, viii, 47]. A programme for 

 organised community action is outlined. 



HoFER (G.). The Aspen Borer and how to control it— U.S. Dept. 

 Agric, Washington, D.C., Farmers' Bull. 1154, October 1920, 

 11 pp., 9 figs. [Received 27th April 1921.] 



The most widely distributed insect causing injury to aspen trees 

 is Sapcrda calcarata, Say, of the life-histor}' of which a brief description 

 is given [cf. R.A.E., A, vii, 300]. The natural enemies include a 

 Hymenopterous egg-parasite, a fly parasitic on the larvae, and a 

 fungous disease responsible for the destruction of about 2 per cent, 

 of the mature larvae. Insects associated with the injury by S. calcarata 

 are Agrilus auxins. Gory, Poecilonota cyanipes, Say, Dicerca prolongata, 

 Lee, Cossns sp., Xylotcrus sp. and X. ohliteratiis, Lee. 



Back (E. A.). Angoumois Grain Moth.— f/.S. Dept. Agric, Wash- 

 ington, D.C., Farmers' Ikill. 1156, September 1920, 20 pp., 

 16 figs. [Received 27th April 1921.] 



The economic importance of Sitotroga ccrcalcUa, Oliv. (Angoumois 

 grain moth) is discussed, and remedial measures for it are advocated 

 [R. A.E., A, vi, 12, 202 ; vii, 543]. All insects may be destroyed by 

 heating to a temperature of 120" V. without injuring the germinating 

 power of the grain. 



