1910] ECONOMIC ZOOLOGY — ENTOMOLOGY. 553 



(pp. 35-133), is presented, which includes tables for the separation of families, 

 genera, and species and descriptions of 4 new genera and 10 new species. A list 

 of coniferous host trees, a glossary of technical tonus, a bibliography of 29 

 titles, and an index to the genera and species are Included. 



Experiments on the disinfection of dwarf beans infested with (Acanthos- 

 celides) Bruchus obtectus and Spermophagus subfasciatus, E. Pantaneu.1 

 {Stag. Sper. Agr. Ital, 50 (1917), Ao. 11-12, pp. 591-609; aha. in Internal. Inst. 

 Am: [Rome], Internal Rev. Sci. and Pract. Agr., 9 (1918), Ao. 5, pp. 639, 640).— 

 Tins is a report of disinfection experiments with a part of a consignment of 

 dwarf beans from Brazil which upon arrival in Italy was found to be slightly 

 Infested with the bean weevil and much more seriously infested by S. subfas- 

 cial i/s (N. m us, 'ill us), a weevil peculiar to South America and hitherto but once 

 met with in Europe, at Paris, where it did not increase. 



In experimental disinfection of the seed and storehouse, the author found 

 that in order to kill the weevils in the seeds each hundredweight of dried beans 

 should be treated for 48 hours with fumes given off by either 50 gm. of carbon 

 bisulphid, about 50 cc. of carbon totrachlorid, or 0.5 gm. of potassium cyanid. 

 It is stated that the germination of the seeds is more affected by the bisulphid 

 than by the totrachlorid, but is not affected at all by the potassium cyanid. It 

 Is stated that the storehouses may be satisfactorily disinfected by spraying 

 with an emulsion of tar oil. 



In tests made of several commercial preparations at temperatures of from 12 

 to 15° C. (53* to 59° F.) the strengths needed to kill the adult insects within 

 the seeds were as follows: Creolin 7: 100, creselion 6: 100, cresosol 5: 100, and 

 lysol 4 : 100. 



Observations of (Acanthoscelides) Bruchus obtectus (bean weevil) in Italy, 

 A. Razzauti (Bol. Lab. Zool. Gen. e Agr. R. Scvola Sup. Agr. Portici, 12 (1918). 

 pp. 94-122, figs. 16; abs. in Intemat. lust. Agr. [Rome], Internat. Rev. Sci. and 

 Pract. Agr., 9 (1918), Ao. 5. pp. 640-642).— A report of studies of the bean 

 weevil in Italy, particularly of its biology. 



The cotton boll weevil in Tennessee, G. M. Bentley (Tenn. Bd. Ent. Bui. 2,1 

 (1917). pp. 14, fios. 24). — A brief popular account of the boll weevil and means 

 for its control in Tennessee. This pest, which first invaded Tennessee in 1914. 

 at present occurs in all or part of 19 counties in the southwestern part of the 

 State. 



Some notes on the habits and life history of the stem weevil attacking 

 Cambodia cotton (Pempheres affinis), T. V. Ramakkishna Ayyae (Madras 

 Agr. Dept. Yearbook, 1918, pp. 1-18, figs. 4). — A summary of information on the 

 cotton stem weevil, the larva of which bores into the stem and seriously affects 

 the growing cotton plant. It has been noted in Behar in North India, and in 

 South India appears to be confined to the Cambodia district. The infested 

 plants can be detected by the presence of gall-like swellings of the lower part 

 of the stem, usually near the surface of the ground. It is the most important 

 insect enemy of Cambodia cotton. 



A study of some ant larva;, with a consideration of the origin and mean- 

 ing of the social habit among insects, W. M. Wheeler (Proe. Anter. Phil. Soc., 

 57 (1918), Ao. 4. PP- 293-34*. fig*. 12). — This extended discussion includes a 

 4-page bibliography. 



Wasp studies afield, P. and N. Rau (Princeton: Princeton Univ. Press, 191S, 

 pp. XV +872, figs. 69). — A report of biological studies and experiments with 

 numerous species of wasps. The introduction (pp. 1-8) is by W. M. Wheeler. 



A synopsis of the Sphecoidea of Nebraska (Hymenoptera). C. E. Mickel 

 (Univ. [Nebr.] Studies, 17 (1917), Ao. 4. pp. 24-138, figs. 2).— The author recog- 



