1919] ECONOMIC ZOOLOGY — ENTOMOLOGY. 1G3 



Work with the apple maggol failed to demonstrate any marked benefits from 

 the use of a Bweetened poison in their destruction. The collection and destruc- 

 tion of infested fruit hefore the maggot lias an opportunity to escape appears to 

 be the best means of control. 



In control work with the pear thrips the application of lime-sulphur com- 

 posed Of 1"><> lbs. of lump lime in 20 gal. of standard lime-sulphur wash to 200 

 gal. of spray proved to be one of the most promising methods of controlling the 

 pest by one application. "An Important advantage of this treatment is that 

 it also controls San Jose scale, though it is a little early for pear psylla. It can 

 be supplemented, however, in case thrips are extremely abundant, by the appli- 

 cation of the tobacco-soap preparation at the time the blossom clusters have 

 separated." 



Under the heading of "Notes for the Year" brief accounts are given of the 

 occurrence during the year of the more important fruit, shade, and forest tree 

 insects and garden, greenhouse, grass, clover, and miscellaneous insects. 



Part 5 of A Study of Call Midges (E. S. R., 3G, p. S56), which deals with the 

 triho Lasiopteriariffl, is appended (pp. 101-252). 



[Control of insect pests in Washington] (Proc. Wash. State Hort. Assoc, 

 U (1918), pp. 27-32, 52-56, 97-101, 127-184) .—The papers here presented in- 

 clude the following: Control of Aphis on Apple and Truck Crops, by A. H. 

 Harrison (pp. 27-32) ; Costs and Efficiency in Arsenate of Lead Spraying, by 

 S. W. Foster (pp. 52-56) ; Some Conclusions Regarding the San Jose Scale, 

 by A. L. Melander (pp. 97-101) ; the Sulphur-Lime Spray, by C. J. DeVise (pp. 

 127-134). 



[A report on economic insects in British Guiana in 1916], C E. Bodkin 

 (Rpt. ]>< i>t. Sri. and Agr. Brit. Guiana, 1916, pp. 61-7.'/).— This is the annual 

 report of the occurrence of and work with the more important insects of the 

 year. A list of the commoner birds of the Botanic Gardens, prepared by L. D. 

 Cleare, jr., is incorporated. A list is also given of 12 species of thrips which 

 occur in the colony. 



Injurious insects in Sweden during 1912-1916, A. Tuixgukn (Meddel. 

 Centralanst. Forsoksv. Jordbruksomrddet, No. 152 (1917), pp. 10.); abs. in Rt r. 

 Appl. Ent., Ber. A. 6 (1918), No. 4, pp. 145-151).— This is a report of the en- 

 tomological department of the Agricultural Experiment Station of Sweden, 

 prepared in cooperation with about 550 correspondents throughout the coun- 

 try who semi in regular reports concerning noxious insects. 



Insect pests of plants cultivated in European Russia in 1914, N. [M] 

 Kilagtn (.4.08. in Tnternat. hist. Agr. [Ro7ne], Intermit. Rev. Sri. and I'ract. 

 A 'jr., 7 (1916), No. 7. pp. 101i7-105.' t ) . — A summary of information on the insect 

 pests of cultivated plants in different parts of Russia, compiled from the 

 Russian literature. 



Reports on injurious insects of the mulberry tree in Formosa, M. Maki 

 ([Formosan Govt. Agr. Expt. Sta. Spec. Bui. 90 (1916). /</>. 865, pU. V,. fig$. 

 84]; abs. in Rev. Appl Ent., Ser. A, 6 (1918), No. 4. pp. 174. 175) .— Eighty- 

 seven insects and six other animals known to injure the mulberry tree in 

 Formosa are reported upon. 



Investigations on the insects injurious to spruce and pine cones, I. 

 TuagArdh (Skogsvdrdsfor. Tidabr., No. 7-8 (1918), pp. 418-476. figs. 4',: aba. in 

 Rev. Appl. Enl.. Ser. A, 6 (1918), No. 8, pp. 90-92).— The present paper, in 

 which only the most common of the injurious insects which are found on 

 spruce cones collected during the winter and their parasites are dealt with, is 

 based upon investigations of about 14.000 cones collected from different parts 

 of Sweden and kept in breeding cages. 



