95 



Dendy (A.). Experiments with Two Secondary Grain Pests, showing 



their Inability to attack Sound Wheat. — Report of the Gram Pests 



(War) Committee of the Royal Society, London, no. 3, November 



1918, pp. 15-16. 



From the experiments detailed in this paper Tribolium casta iieum 



and Sikanus surincmiensis, beetles that are frequently numerous in 



damaged grain, have been shown in a manner that is considered 



conclusive to be incapable of attacking sound wheat. 



Dendy (A.). Observations on the Attraction of Certain Grain Beetles, 

 especially Weevils, by Water. — Report of tlie Grain Pests (War) 

 Committee of the Royal Society, London, no. 3, November 1918, 

 pp. 17-18. 



The attraction oi grain weevils to water was tested by plunging 

 beakers containing water, and dry beakers, into wheat to within about 

 an inch of the rim. The results showed that both Calandra oryzae and 

 C. granaria are largely attracted by water. There is little difference 

 between them in this respect, but when water is present in sufficient 

 quantity in the tube or beaker C. oryzae is much more likely to be 

 caught in it than C. granaria. Individuals of Sikanus sunnamensis 

 and Tribolium castaneum were also trapped in a similar manner. It 

 seems probable, in view of these facts, that water-traps might prove 

 effective in catching C. oryzae in large numbers, while for C. granaria 

 damp rags or sponges might be preferable, as this species is able to 

 escape more easily from water-traps. Such traps were suggested 

 many years ago by Miss Ormerod for catching these weevils. 



GossAKD (H. A.) & King (J. L.). The Peach Tree Borer, Sanninoidea 

 exitiosa, Say. — Ohio Agric. Expt. Sta., Wooster, Bull. no. 329, 

 September 1918, pp. 57-87, 15 figs. 



The greater part of the subject-matter of this bulletin has already 

 been noticed [see this Revierc, Ser. A, v, pp. 207 and 368j. Natural 

 enemies of Aegeria {Sanninoidea) exitiosa include the Hymenopterous 

 parasites, Microbracon dorsator, Say, found during the period of 

 pupation, Phaeogenes ater, Ichneumon irritator, Bracon micropiclvs, 

 Riley, and Microgaster sp. 



Becker (G. G.). The Apple Woolly Aphis, Eriosoma lanigerum, Haus. 

 — Univ. Arkansas Agric. Expt. Sta., Fayetteville, Bull. no. 154, 

 July 1918, 22 pp., 5 plates. 



The subject-matter of this bulletin has already been noticed from 

 another source [see this Review, Ser. A, vi, p. 311]. 



Report on the Prevalence of Some Pests and Diseases in the West 

 Indies during 1917. (Compiled from the Reports of the Principal 

 Agricultural Officers.) — West Indian Bull., Barbados, xvii, no. 2, 

 1918, pp. 83-106. 



This is a resume of various local reports, much of the information 

 from which has already been noticed [see this Review, Ser. A, vi, pp. 32, 

 187, 210, 249 and 251]. 



