19101 i;<'ONOMK' ZOOLOGY- ENTOMOLOGY. 855 



Insects injurious to maple tree, H. L. Raiiky (I'ror. rt. Maple Sugar 

 Maker* Assoc, 24 (1917), pp. 74-8.',).— This paper contains a list of the Insects 

 known to attack maples, 



(Work with stored grain insectsl {Rptt. Grain rests (War) Committee 

 Boy. Soc. [London], 191<J, No. 1, pp. .!',; 1918, No*. 2, pp. 48, pit. //, fig. 1; .1, 

 !){>■ 18). — These reports include the following papers: No. 1. KcjK.rt on the 

 Effect of Air-tight Storage upon Grain Insects, I, by a. Denny (pp. r, 24); No. 

 l\ Bionoiuic, Morphological, and Economic Report on the Acarida <>f stored 

 Grain and Flour [Aleurobiua farina. GRyciphogus oadaverum, OKeyletiu erudi- 

 his, and Acarophrna.v triholii u. g. and n. sp.], hy R. Newstead and II. M. 

 Dnvall (pp. 3-41 i ; Preliminary Note on Samples of Flour Bnbmltted for 

 Bacteriological Examination by Prof. Newstead, hy J. M. Beattie (pp. 4L". 48) ; 

 Report on Six Samples of Flour Into Which Mites Have 1',.,-n Introduced, by 

 A. E. Humphries (pp. 44-48) ; No. 3, Report on the Effect of Air-tight StOM 

 upon Grain Insects, II, by A. Dendy and II. D. Elklngton (pp. 3-14) ; Expert- 

 nients with Two Secondary Grain Pests [TriboOum castaneum ami B tt va mu 

 surinamensis], Showing Their Inability to Attack Sound \\'hc;it (pp. 15, 16) 

 and Observations on the Attraction of Certain Grain Beetles, Especially 

 Weevils, by Water (pp. 17, 18), both by A. Dendy. 



The conclusions of Newstead and Duvall are as follows: "Wheat and Hour 

 are liable to attacks and injury by acarids. .1. farina? is the aearld responsible 

 for most of the damage. Mites will not injure wheat and Hour in which the 

 moisture is 11 per cent and under, whatever the temperature may be. They 

 may flourish and increase exceedingly when the moisture is over 13 per cent. 

 Given favorable (to them) moisture conditions Increase is very rapid at 

 temperatures between GO and 75° F., less so between 50 and GO", while between 

 40 and 50° increase is slow. The remedy for mite-infested wheat Is to screen 

 it thoroughly, in order to remove as many of the mites as possible, and SUbJ< • t 

 it to some treatment whereby the excessive moisture is reduced, such as a blast 

 of hot air followed by cooling. 



"The injury to flour is much more serious and much less readily coml 

 than in wheat. Flour which is heavily mite-Infested is unfit for tinman con- 

 sumption." 



The graduated tent fumigation dosage system, A. W. Morrii.t. (f'al. 

 Citrogr., 4 (1919), No. S, pp. 52, 74, 76, fig. 1). — In this paper the author re 

 views the history of the origin of the graduated tent or improved system Of 

 dosage now in general use in the citrus fruit growing districts of California. 



The graduated tent and the process of using it for the estimation of dosau-e. 

 which was devised as a result of work by the author while an asent of the 

 Bureau of Entomology of the U. S. Department of Agriculture, was described 

 and illustrated in specifications of Letters Patent No. 002,674, filed December 

 30, 1907, and dedicated by the author to the puhlic. This system, which m 

 described and illustrated in a bulletin by the author Issued ( M iocs and prev- 

 iously noted (E. s. R., 20, p. 555), was a graduated tent dosage system and 

 was not connected with any system or method of measuring tents used prior 

 to 1907. 



The biological method of control of Oeceticus platensis. P. Carthf: Massini 

 and J. BrSthes (An. Sov. Rural Argentina. 52 (1918). No. 4, /,/,. :n7-215. pi. 1, 

 figs. 11; abs. in Rev. Appl. Uwt., Her. A, 6 (1918). No, tl, pp. 517. 518).— A re- 

 port upon parasite control work with the bagworm (O. platensis) in Argentina, 

 in continuation of that previously noted (E. S. R.. 88, p. BBS), which deals in 

 part with a new dipterous parasite described as Parexorista caridei. 



