283 



NiCHOLLs (H. M.). Annual Report of the Government Microbiologist.— 



Tasmania Dcpt. Agric. & Stock, Kept. 1019-20, Hobart, 1920, 

 pp. 21-25, 1 plate. [Received 12th April 1921.] 



A large number of gardens in Launceston have been successfully 

 sprayed with lime-sulphur solution for the suppression of the San Jose 

 scale [Aspidiotiis perniciosus]. Although this scale is still distributed 

 over a comparatively wide area, its numbers are greatly reduced. 

 Aspidiotiis ostreaeformis (oyster-shell scale) has been found to be so 

 widely spread that regulations have been drawn up compelling owners 

 of infested property to take adequate steps for its suppression. 

 Tasmania is at present the only State in the Commonwealth in which 

 it is found, and although it is not likely to prove a menace to well kept 

 commercial orchards, it might cause inter-State complications if 

 fruit were exported from localities where its presence was ignored. 



A very serious outbreak of the mussel scale [Lepidosaplies] occurred 

 in some districts. Lime-sulphur with a specific gravity of 1 • 03, or 5° Be. , 

 is advocated as the best measure against this pest. Oil sprays are not 

 reliable under Tasmanian climatic conditions. Special attention 

 should be paid to hawthorn hedges in the vicinity of orchards, as they 

 form a continual source of infection, harbouring both scales and 

 fungous diseases. 



The advantages of a calyx spi'ay for the control of codling moth 

 [Cydia pomonella] are discussed. Against Tetranvclnis bimacidatus 

 infesting hops and apple trees, lime-sulphur with ordinary flour paste 

 applied at the rate of 1 lb. to 20 gals, of water proved an effective 

 check. The spray should be directed to the underside of the leaves. 

 Bryobia pratensis was also abundant owing to the exceptional hot 

 weather. The best time for spraying with lime-sulphur against 

 these leaf mites is just when the leaves are falling or when the leaf buds 

 begin to open in the spring. 



Arsenate of Lead. — /''• ^^pt- Agric. S. Australia, Adelaide, xxiv, 

 no. 6, January 1921, pp. 510-511. 



A number of samples of various brands of lead arsenate purchased 

 in Adelaide have been analysed by the South Australian Department 

 of Agriculture, the analyses of ten brands being given. 



Weiss (H. B.) & Dickerson (E. L.). Gargara genistae, Fabr., a 

 European Membracid in New Jersey (Homop.). — Ent. News 

 Philadelphia, Pa., xxxii, no. 4, April 1921, pp. 108-112, 1 fig. 



Gargara genistae, F., is recorded on Caragana arborescens from New 

 Jersey, and its life-history in that state is briefly described. 



Olsen (C. E.). Two Seasons collecting of Aphidae, principally on. 

 Long Island, New York, with Notes on some of the Species. — 



Bull. Brooklyn Ent. Soc, xvi, no. 1, February 1921, ])p. 14-19. 



The Aphids dealt with include: — Acyrthosiphon {Macrosiphum) pisi, 

 Kalt., on Medicago lupulina ; M . rudbeckiae. Fitch, on Silcne nocti flora, 

 Antennaria neodioica and Anaphalis margaritacca ; Phorodon inulae. 

 Pass., on Imda hcleninni ; Myzus fragaefolii, CklL, on Fragaria 

 virginiana ; Hyalopteris arundinis, F., on Prunus serotina ; Aphis 

 forbesi. Weed, on Fragaria virginiana; A. gossypii, Glov., on 



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