1917] ECONOMIC ZOOLOGY ENTOMOLOGY. 55 



is practically omnivorous. It is marked cannabalistic, attacking and devouring 

 weakened individuals throughout its life cycle. 



The parasite Sparaison pilosvm has been reared from its egg and Calosoma 

 zimmermanni, Cyrtopogon maculosis, and species of ants have been observed as 

 predatory on small crickets. The crickets are more easily reached and killed 

 when young before they have spread from the restricted breeding grounds. At 

 this time spraying with a 5 to 10 per cent kerosene emulsion, the use of fresh 

 horse manure containing 2 per cent of an arsenical as a poisoned bait, and 

 burning with straw or with an insecticidal blast torch are practical. Migratory 

 crickets may be checked by vertical walled ditches containing deeper pitfaUs 

 dug across their path, since through massing in the pits, they quickly smother 

 out each other's lives. Fencing of 1 by 8 in. boards joined end to end on edge 

 and furnished with frequent pitfalls is. sometimes employed in place of ditching. 



Results of work against the locust in Uruguay, R. Sundbekg et al. (Z)e- 

 fensa Agr. [Uruguay] Mem., 1915, pp. 15Jf, figs. 19). — A report upon locust 

 control work in 1914-15. 



The pear thrips in British Columbia and its control, A. E. Camekon and 

 R. C. Treherne {Agr. Gaz. Canada, 3 {1916), No. 11, pp. 9^6-952, figs. 4). — 

 This paper reports upon observations of this pest in British Columbia, where 

 it was first discovered in April, 1915, as recorded by Hewitt.* It has been 

 found in that Province throughout the district lying between Victoria and 

 Sidney in the Saanich Peninsula, being more or less uniformly distributed 

 within this area. It has also been found at Duncan and is thought to occur 

 at Nanaima. Quite satisfactory results were obtained from spraying. 



The tomato and bean bug (Nezara viridula), W. W. Froggatt {Agr. Qaz. 

 N. S. Wales, 27 {1916), No. 9, pp. 649, 650, pi. i).— This bug, which first ap- 

 peared on tomato plants in the neighborhood of Sydney some five years ago, 

 has increased in numbers during the last two years and become a pest of the 

 fruits and foliage of the tomato, the foliage and young pods of French beans 

 and potato plants. 



The Helopeltis question, especially in connection with cacao, W. Roepke 

 {Meded. Proefstat. Midden-Java, No. 21 {1916), pp. 40+III; abs. in Rev. Appl. 

 Ent., Ser. A, 4 {1916), No. 11, pp. 442-444)- — A discussion of Helopeltis antonii 

 and H. theivora, including their economic status, biology, natural enemies, and 

 control measures. 



The maple aphis and its dimorphic larva, E. J. Btjnnett {Proc. So. London 

 Ent. and Nat. Hist. Soc, 1915-16, pp. 21-24, pl- !)■ — Reports observations of the 

 biology and anatomy of Chaitophorus aceris. 



Scale insects and their control, R. T. Cotton {Porto Rico Bd. Agr. Expt. 

 Sta. Circ. 9 {1911), pp. 7; Spanish Ed., pp. 7). — A brief popular account. 



Mimicry in butterflies, R. C. Punnett {London: Camhridge University Press, 

 1915, pp. VIII-\-188. pis. 16, figs. S).— A popular work. 



The bollworm in Egypt, G. C. Dudgeon {Trans. 3. Internat. Cong. Trop. 

 Agr. 1914, vol. 1, pp. 399-432, pis. 2). — This extended account of the biology, 

 economic status, natural enemies, and control measures for the Egyptian boll- 

 worm (Earias insulana) includes much data relating to its immature stages 

 taken from a contribution by F. C. Willcocks published in 1905." See also 

 another note (E. S. R., 30, p. 252). A colored plate of the several forms of the 

 adult after Storey (E. S. R., 32, p. 152) is included. 



Control of the gipsy moth by forest management {U. S. Dept. Agr. Bui. 

 484 {1917), pp. 54, pl. 1). — This bulletin consists of two parts. 



lAgr. Gaz. Canada, 2 (1915), No. 8, pp. 734-737. 

 ' Yearbook Khediv. Agr. Soc, Cairo, 1905, pp. 57-91, 



102477°— 17 5 



