391 



for identification. The two first-named are the only ones of economic 

 importance. Figures and details of these parasites are given. 



Hand-picking and spraying are the measures advised ; the parasites 

 should Jae protected and allowed to escape. Solutions of 1 per thousand 

 Paris green or 5 per cent, lead arsenate proved suitable and did no 

 injury to young coconut plants. 



Piers (H.). The Orthoptera (Cockroaches, Locusts, Grasshoppers and 

 Crickets) of Nova Scotia ; with Descriptions of the Species and 

 Notes on their Occurrence and Habits. — Proc. & Trans. Nova 

 Scot. Inst. Sci, Halifax, xiv, no. 3, 1916-1917, pp. 201-354, 4 



plates. 



^^ery little is known of the Orthopterous fauna of Nova Scotia, where, 

 as elsewhere, considerable damage is caused to crops by the various 

 species, especially during a succession of dry seasons. An outUne of 

 the hfe-history of Orthoptera in general is given. The chief natural 

 enemies are a mite, Tronibidium locustarum, a worm, Gordius sp., 

 and a fungus, Empusa grylli. The usual means of control are advo- 

 cated. 



A large number of species are described, with keys to assist in their 

 identification ajid notes on their distribution, including : — The cock- 

 roaches, Phyllodronim (BkMella) germanica, L. (croton bug) and 

 Blatta orienialis, L. ; Chorthippus curtipennis, Harris (short-winged 

 brown locust) ; Camnula pellucida, Scudder (clear-winged locust) ; 

 Dissosteira Carolina, L. (black-winged locust) ; Melanopilus atlantis, 

 Riley (lesser migratory locust) and 31. femur-rubrum, De G. (red- 

 legged locust). For the latter the following remedial measures are 

 advocated : early spring ploughing to a depth of at least 6 inches and 

 the use of a poison-bait consisting of 20 lb. of bran mixed with 1 lb. 

 of white arsenic or Paris green and added to a mixture of 2 qts. 

 molasses, the juice and finely chopped peel and pulp of 3 oranges 

 or lemons and oh gals, of water. This is sufficient for 5 acres. 

 M. hivittatus, Say (yellow-striped locust) is attacked by fungi and many 

 parasites including Tromhidium locustarum, Riley. Scudderia pistil- 

 lata, Brun., is found chiefly on speckled alders {Alnus incana), on 

 which it feeds, the eggs being laid on the outer surface of slender 

 twigs or inserted in the edges of leaves. 



Crickets include Nemobms fasciatus, De G. (striped ground cricket), 

 which does considerable damage owing to its very large numbers, 

 and Gryllus pemisylvanicus, Burm. (Pennsylvanian field cricket). - 



Hardenberg (C. B.). South African Bagworms : their Transformations 

 Life-history and Economic Importance. Part IL— Annals Natal 

 Museum, London, iv, no. 1, May 1919, pp. 143-227, 25 figs., 1 

 plate. [Received 2nd July 1919.] 



This is a continuation of a previous paper [see this Revieiv, Ser. A, 

 V, p. 378]. Among the species described are Acanthopsyche tristis, 

 Janse (thatched bagworm), which has been found in abundance on 

 asparagus and occasionally also on the lower branches of wattle, 

 though no serious damage is recorded. A. alba, Janse, feeds on 

 wattle and has occasionally been found on Cupressus macrocarpa, 

 privet {Ligustrum vulgare) and Stigmaphyllon ciliatum. It probably 



