1919] ECONOMIC ZOOLOGY — ENTOMOLOGY. 57 



Proceedings of the Entomological Society of Nova Scotia for 1917 ( Proo, 

 Bnt. Soe. Nova Scotia, 1917, pp. 96, pis. 10, figs. //3). — The papers here presented 

 Include the following: The Tree Hoppers of Nova Scotia, by W. n. Brittaln 

 (pp. 7-14); The Work of the Dominion Entomological Laboratory in Nova 

 Scotia, by G. E. Sanders (pp. 15-17) ; Notes on the Yellow Leaf Hopper of the 

 Birch (Oneopsit sobrinu), by W. H. Brlttain (pp. 18-22); The Locustidse of 

 Nova Scotia, by C. B. Gooderbam (pp. 23-3G) ; Miscellaneous Notes on the 

 Apple Faggot (1017), by W. II. Brittain (pp. 37-41); The Zebra Caterpillar 

 (pp it I'.n, The Fall Cankerworm (pp. 49-53), The Rusty Tussock Moth 

 (Notolophtu antiqua) (pp. 54-61), and The White-Marked Tussock Moth 

 (pp. 02-0)8), all by II. G. Payne; Empoasca unicolor as an Apple Pest, by W. H. 

 Brittaln and L. G. Saunders (pp. 69-73) ; The Introduction of the Parasites 

 Of the Brown-Tail and Gipsy Moths into Canada, by L. S. McLaine (pp. 74-76) ; 

 The Dropping of Apples Caused by Spraying with Lime-sulphur, by G. E. 

 Sunders and A. Kelsall (pp. 77-84) ; Notes on the Biology of Lygus pratensis 

 in Nova Scotia, by W. H. Brittain and L. G. Saunders (pp. 85-91) ; and Some 

 Notes on the Crambinae of Nova Scotia, by E. C. Allen (pp. 92-94). 



The papers presented include morphological and biological notes on the apple 

 maggot, zebra caterpillar, fall cankerworm, rusty tussock moth, white-marked 

 tussock moth, and /•;. unicolor, respectively, much of the data being given In 

 tabular form. Technical descriptions of the instars of these pests are in- 

 cluded. E. unicolor, the injury of which to apple foliage resembles that of 

 Empoa rosa, has proved to be a common leaf hopper on apple in Nova Scotia 

 ;il (hough it has not as yet appeared in sufficient numbers to warrant special 

 treatment. 



Investigations of the dropping of apples caused by lime-sulphur have shown 

 that the injury may be influenced by a number of factors. Of first importance 

 Is the direction in which the spray is applied, the application of lime-sulphur 

 to the underside of the leaf causing the damage. As regards period of appli- 

 cation the least injury is caused by the early sprays, the damage Increasing 

 with each successive spraying period. At a specific gravity of 1.005 lime- 

 sulphur will do more damage when wrongly applied than will lime-sulphur with 

 a specific gravity of 1.01, properly applied. Some varieties, such as Mcintosh, 

 will stand a very strong solution, while Baldwin and Kibston injure very easily. 

 It was found that the longer the solution is on the leaves before evaporating, 

 and the more frequently the dry spray material is brought into solution, the 

 greater will be the injury. A tree loaded with fruit will not stand as much 

 or as strong a spray as one of the same variety that is not full of fruit. The 

 more thrifty a tree is, the greater its resistance to injury. 



Annual report of work done in the entomological section during the year 

 ended June 30, 1917, II. L. Putt (Bpt. Agr. Activ. Govt. Bihar and Orissa, 

 1917, pp. 11-13). — A brief report of the occurrence of and control work with 

 crop pests. 



Sugar cane insects, R. Rami'rkz (Bol. Mr. Ayr. [Mcx.], 3 (1917), No. 1-2. pp. 

 41-4't, flat. 5). — A brief account of the more important sugar cane insects of 

 Mexico, including the sugar cane beetle, sugar cane borer, Sphenophorus ob- 

 seurus, Castniu licus, Schistocerca americana, (Dactylopiui) Pxeudocoecus sae- 

 chari, D. destructor, D. longiapinus, and army worm. 



Miscellaneous truck crop insects in Louisiana, T. H. Jones (U. S. Dcyt. Apr. 

 Bui. 703 (1918), pp. 19, pis. 5, figs. 5).— This bulletin consists of three parts 

 which deal with the subject as follows : 



I. Insects injurious to the globe artichoke in Louisiana (pp. 1-5). — The author 

 first calls attention to the fact that apparently little attention has been given to 

 the insect injury to globe or burr artichoke (Cynara scolymus) in this country. 



