62 EXPERIMENT STATION" RECOB©. [Vol. 38 



of the cigarette beetle (Lasioderma serricorne), its life history and habits, and 

 control measures based upon investigations of the Bureau of Entomology. 



The henequen curculionid (Scyphophonis acupunctatus) (Bol. Dir. Agr. 

 \_Mex.'\, 2 (1916), No. 4, pp. lSl-138). — This is a summary of information on 

 S. acupunctatus, which is the worst enemy of henequen or sisal iu Yucatan, 

 where it is commonly known by the name " max." The paper deals with its 

 morphology, biology, economic importance, and control. 



The coconut red weevil (Ehynchophora ferruginea), G. M. Henry {Trop. 

 Agr. [Ceylon'i, 48 (1911), No. 4, pp. 218, 219, pi. i).— This pest is widely spread 

 and common in Ceylon wherever coconuts are grown. 



The boll-weevil problem, with special reference to means of reducing dam- 

 age, W. D. Hunter (U. S. Dept. Agr., Farmers' Bui. 848 (1917), pp. 40, figs. 

 7) — This summary of information includes the practical results of the more 

 recent investigations. 



Collection of weevils and infested squares as a means of control of the 

 cotton boll weevil in the Mississippi Delta, B. R. Coad and T. F. McGehee 

 (U. S. Dept. Agr. Bui. 564 (1917), PP- 51, pis. 2, fig. i).— This is a report of a 

 series of studies conducted in Mississippi and Louisiana during the seasons of 

 1915 and 1916, with a view to ascertaining the value of various methods of collect- 

 ing boll weevils and Infested cotton forms as a means of control for the cotton boll 

 weevil, of which a report of the work in 1915 has been previously noted (E. S. 

 R., 35, p. 554). Since the investigations in 1916 were conducted unde^ seasonal 

 and climatic conditions which differed considerably from those of 1915 and were 

 more extensive, the combined results of the two seasons' investigations, here 

 presented, are considered to be fairly conclusive. 



The data are presented under the headings of the time interval between bag- 

 and-hoop collections in relation to the proportion of infested forms secured, plat 

 tests of the value of the bag-and-hoop as a means of weevil control under field 

 conditions, and studies on the value of a mechanical collector of boll weevils. 



In summarizing the work the author finds that two points in particular stand 

 out in the results of the studies in 1916: (1) The complete failure of the pick- 

 ing operations to exert any appreciable beneficial effect on the weevil infesta- 

 tion, and (2) the injurious effect of the use of the bag-and-hoop upon the plants 

 themselves. It is thought that in a year of light infestation a slight degree of 

 benefit may be secured from the picking operations, but that in a year of aver- 

 age or heavy infestation this benefit is completely lost. The mechanical picker 

 failed to give satisfactory results. 



The bulletin concludes with a discussion of the relation between labor supply 

 and malaria. 



The introduction into Canada of the ichneumon fly, Mesoleius tenthredinis, 

 a parasitic enemy of the larch sawfly, Nematus erichsonii, O. G. Hewitt 

 (Agr. Gaz. Canada, 4 (1917), No. 5, pp. 355-S57, fig. 1). — The author records the 

 introduction of M. tenthredinis from England where it parasitizes a high per- 

 centage of the larch sawfly. Cocoons were distributed at several points in 

 Quebec and Ontario in 1911, in the Riding Mountain Forest Reserve, east of 

 Cedar Lake, Manitoba, in the spring of 1912, and near Aweme, southern Mani- 

 toba, in the spring of 1913, and the parasite appears to have become established. 



A second importation of the European QSg parasite of the elm leaf beetle, 

 L. O. Howard (Jour. Econ. Ent., 10 (1917), No. 5, pp. 504, 505). — The author 

 records the second importation of Tetrastiehus xanthoinelcence into this country 

 (E. S. R., 20, p. 957) and its distribution in Philadelphia, Washington, D. C, and 

 Ithaca, N. Y., in June, 1917. 



