1019] ECONOMIC ZOOLOGY ENTOMOLOGY. 251 



The value of crude arsenious oxid in poison bait for cutwoi-ms and grass- 

 hoppers, J. J. l>Avi.s {Jour. Ecun. Ent., 12 {I'JIU), No. 2, pp. 200-20.i) .—This is 

 a brief suniuiary of tests made by entomologists in various parts of tlie emmtry 

 of finely powdered crude arsenious oxid obtained from a IMoiitana copper 

 smelter, a test of Avhlch on the army worm has been previously noted (E. S. R., 

 39, p. 361). Good results were obtained in its use against grasshoppers and 

 cutworms. The author considers it a satisfactory and reliable substitute for 

 Paris green at about one-seventh the cost. Only the powdered grade is 

 recommended. 



Sulphate of ammonia as an insecticide, E. D. Colon {Porto Rico Dept. Agr. 

 Sta. Circ. 15 {lOlD), ^Spanish K(J., pp. 3-6; Sugar [New York], 21 {1919), No. 7, 

 pp. 396, 111). — Attention is called to the insecticidal properties of sulphate of 

 ammonia when it is applied to soil infested with the white grubs which attack 

 sugar cane. The author quotes from a report by Illingworth^ of observations 

 of its use in Australia. 



[Report of the] department of entomology, H. C. Seveein {South Dakota 

 Sta. Rpt. 1918, pp. 18-21. This report deals with investigations that have been 

 conducted with the web spinning sawfly {Neurotoma inconspicua) and the 

 common field cricket {Gryllus abbreviatus). 



N. inconspicua was found to be highly parasitized by a tachinid, said to 

 represent a new genus and species, which destroyed from 40 to 60 per cent of 

 the larvpe at times. Liquid sprays consisting of lead arsenate 2 lbs. to 2-5 gal. 

 of water or a 5 per cent kerosene emulsion are said to be the most satisfactory 

 control measures. 



In the experimental destruction of G. abbreviatus in alfalfa fields at Capa, 

 poison baits, consisting of (1) bran 25 lbs., blackstrap molasses 2 qts., 6 oranges, 

 and water 4 gal., and (2) fresh horse manure 2.5 lbs., blackstrap molasses 2 qts., 

 6 oi-anges, and water 4 gal., gave very satisfactory results. 



Notes on some little-known pests of red clover, G. W. Heuiuck and J. D. 

 Detwiler {Jour. Econ. Ent., 12 {1919), No. 2, pp. 206-209, figs. 3).— The notes 

 here presented relate to the lesser clover leaf weevil (Phytonomus nignrostris) , 

 the clover head weevil [P. niclex), and the clover Tychius {Tychius picirostris) . 



Internal disease of cotton bolls in the West Indies, II, W. Now^ell {West 

 Indian Bui., 17 {1918), No. 1, pp. 1-26, fig. 1). — The author reports a continua- 

 tion of studies previously noted (E. S. R., 39 p. 754), referring chiefly to condi- 

 tions in St. Vincent late in 1917 and to the activities of bugs other than Dysdercus 

 spp., more particularly to tliose of the green bug {Nezara viridula). He states 

 tluit the control measures employed against the cotton stainer have reduced the 

 trouble to negligible proportions over large areas of that island, although in 

 some lociilities severe infestations by the green bug and pea chink {Edessa 

 iiicditnbundn) were found worthy of study. 



Punctures of the bolls by bugs, in particular the green bug, cotton stainers, and 

 llie leaf- footed bug, and resulting injury to tlie seeds, check growth of the lint, 

 and cause drying or shedding of young bolls. Experiments on the effect of con- 

 lining bugs from known food plants on previously protected bolls give evidence 

 that the punctures l:)y the green bug readily cause infection with the fungi of 

 internal boll disease, but only when the bugs are ti'ansferred from infected 

 plants. The same observation was made in the case of the pea chink. 



Important foreign insect pests collected on imported nursery stock in 

 1918, E. R. Sasscer {Jour. Econ. Ent., 12 {1919), No. 2, pp. 133-136).— A brief 

 accoimt is given of the more important species intercepted. 



1 Queensland Agr. Jour., 10 (1918), No. 6, pp. 25S, 259. 



