80 



none of these treatments can be considered to have reduced the injury 

 profitably, though lead arsenate, apphed undihited as a dust, gave the 

 best results. 



Illingworth (J. F.)- Tachinid Parasite of the Cane Borer Weevil.— 

 Queensland Agric. JL, Brisbane, x, no. 3, September 1918, 

 pp. 149-150. [Received 20th December 1918.] 



The author records the obtaining of an abundant supply of the 

 Tachinid parasite [Ceronmsia sphenophori] of the cane borer weevil 

 [Rhabdocnemis obscuru^] from a field which was an old nursery of 

 seedling canes, and where no trash had been burned, thus affording 

 ideal conditions for the propagation of the borer. The old breeding 

 cages from which the parasites were hberated in 1910 were located 

 alongside this field. 



All the sugar-cane in the district is burned before cutting, which 

 may account for the scarcity of the borers, the fires destroying a large 

 percentage of those that are left in the discarded canes, or the grubs 

 succumbing later to the action of the sun upon the exposed stalks. 

 Further, fully half of the sugar-cane grown is of a variety so hard that 

 the borers are not attracted to it. 



The natural enemies of the Tachinid parasites were very scarce in 

 the district, the exotic ant, Pheidole niegacephala, being present only 

 in moderate numbers and jumping spiders being practically absent. 



CusHMAN (R. A.). Notes on the Cocoon-spinning Habits of Two 

 Species of Braconids (Hym.). — Proc. Entom. Soc. Washington, 

 B.C., XX, no. 7, October 1918, pp. 133-136. [Received 30th 

 December 1918.J 



This paper deals with the method of construction of the cocoons of 

 Apanteles congregatus, Say, parasitising Ceratomia cutalpae, Boisd., and 

 of Meteorns hjphantriae, Riley, infesting Hgphardria cnnea, Drury (fall 

 webworm). 



AiNSLiE (C. N.). A Note on the Economic Importance of Samia 

 cecropia (Lep.). — Proc. Entom. Soc. Washington, B.C., xx, no. 7, 

 October 1918, pp. 150-152. [Received 30th December 1918.] 



The larvae of Samia cecropia may occur in large numbers without 

 being noticed, in spite of their size, unless they happen to concentrate 

 on a single tree or group of trees. An example of this on some box 

 elder trees is given. An outbreak of this moth in a city of North 

 Dakota in 1917 that threatened the trees of the city was dealt with by 

 paying for the collection of cocoons, nearly 20,000 being destroyed 

 in a single year ; a large percentage of these were found to be parasitised. 



OossARD (H. A.). The Wheat-insect Survey of 1918.— Mthlij. Bull. 

 Ohio Agric. Expt. Sta., Wooster, iii, no. 9, September 1918, 

 pp. 259-266, 2 figs. [Received 30th December 1918] 



The survey of wheat conditions for the season of 1918 in 73 of the 

 88 counties of Ohio, showed that the most important pest of wheat 

 was the joint- worm [Isosoma], which reduced the yield in 1918 by at 



