ECONOMIC ZOOLOGY ENTOMOLOGY. 159 



K. Schubert, the Staphylinidse ; part 20, by A. Schmidt, the Aphodiiuse; part 

 21, by K. Ahlwarth, the (iyriuidie; part 22, by H. Gebien, the TeuebrionidiB, 

 II; part 23, by S. Scheukliiig, the Cleridse; part 24, by H. Bickhardt, the His- 

 teridae ; part 25, by K. W. vou Dalla Torre, the Cebrionidiie ; part 26, by M. Pic, 

 the Scraptiidae and Pedilidse ; and part 27, by A. Raffray, the Pselaphidse. 



Further biolog'ical notes on the Colorado potato beetle, Leptinotarsa 10- 

 lineata, including' observations on the number of generations and length 

 of the period of oviposition. — II, Illinois, A. A. Gikault and J. Zetkk {Ann. 

 Ent. Soc. Anier., Jf (1911), No. 1, pi). 71-83). — A continuation of the studies 

 previously noted (E. S. R., 20, p. 1151). 



The elm-leaf beetle, G. W. Herrick (New York Cornell Sta. Circ. 8, pp. 6, 

 figs. 9). — A brief popular account including methods of control. 



Budworms in corn (Diabrotica 12-punctata), W. F. Turner (Alabama Col. 

 Sta. Circ. 8, p>p. 7, fig. 1). — A popular account of the southern corn root worm, 

 which next to the corn weevil is the worst pest of the corn crop in Alabama. 



The application of cold to the destruction of tobacco beetles, G. Pook 

 (AhH. in Chcm. Ztg., .1', (1910), No. 126, p. 1127; Intcrnat. Inst. Agr. [Rome], 

 Bui. Bur. Intel, and I'lant Di.sea.ses, 1910, Nov., p. 177). — Very successful re- 

 sults are said to follow the application of cold In the destruction of tobacco 

 beetles, this practice being commonly employed in Brazil. The tobacco is ex- 

 posed for about 22 days in absolutely dry inclosures to a temperature of from 

 — 3 to — i° C. or preferably to — ^10°. The immature stages as well as the 

 adults are killed at these temperatures. 



The boll weevil advance in Alabama, W. E. Hinds (Alabama Col. Sta. Circ. 

 5, pp. 6). — It is stated that the boll weevil was on September 3, 1910, found for 

 the first time in Alabama, on the western edge of Mobile County. Its advance 

 was so rapid that by the middle of September the line of infestation included 

 about three-fourths of the county and 10 days later weevils were found in 

 the southern part of Choctaw County. The author considered it probable that 

 by the time of the first frost, they would have reached as far north as the 

 southern part of Pickens County and as far east as Covington County. 



The biology of the weevil is briefly summarized and attention called to the 

 importance of the immediate adoption and practice of control measures. 



Papers on cereal and forage insects. — The maize billbug (Sphenophorus 

 maidis, E. O. G. Kelly (U. S. Dept. Agr., Bur. Ent. Bui. 95, pt. 2, pp. 11-22, 

 pis. 2, figs. 6). — In this pai^er the author reports observations made from June 

 to December, 1910. 



This beetle, formerly referred to as S. robustus, was found by Chittenden 

 in 1905 to represent a new species which he described as S. maidis. It appears 

 to occur in the entire territory between South Carolina and Texas and north- 

 ward to Kansas and Missouri, its injury having been reported from South 

 Carolina, Georgia, Alabama, Arkansas, and Kansas ; it has also been recorded 

 as occurring in Michigan. Technical descriptions are presented of the larva 

 and pupa, by E. A. Schwarz, with the original description of the adult by 

 Chittenden. 



The adults attack young corn plants and probably some of the coarser 

 grasses, as the adults have been found at the base of swamp grass (Tripsacum 

 dactyloides) in considerable numbers, together with larvfe and pupge. In the 

 latitude of southern Kansas eggs were laid in slits in the sheath of the plant 

 during the month of June, the larva? hatching out in from 7 to 12 days. They 

 at once begin feeding on the tissues of the young corn at the bottom of the 

 egg puncture, directing their burrowing inward and downward into the taproot. 

 When they finish eating the tender parts of the taproot they direct their 

 feeding upward and continue until full grown. This burrowing of the taproot 



