430 



the fungus in the presence of the hving scale and by destroying the 

 scale itself. Attempts in the first direction failed. Against the scale, 

 a number of substances were tested, and as a result, the following 

 recommendations for control are given : — (1) Spraying in spring before 

 the buds open with the following emulsion : — 5 gals, raw linseed oil, 

 3 gals, gasoline, 2 lb. soap, 92 gals, water ; or with proprietary miscible 

 oils containing not less than 75 per cent, mineral oil, at the rate of 

 1 part to 16 to 20 parts water ; (2) spraying just before the migration 

 to the leaves with 10 lb. flour, 15 lb. stone hme, 20 lb. sulphur, 

 50 U.S. gals, water. 



A bibhography of 76 papers on the terrapin and other scale-insects 

 is appended. 



Insect Pests in Manitoba. — Canadian Horticulturist, Peterboro, Ont., 

 xxxix, no. 8, August 1916, p. 205. 



Shade and ornamental trees in Manitoba have suffered severely from 

 insect attack during the past two years. Aphids and cankerworm 

 have been mainly responsible for the death of from 30 to 50 per cent, 

 of the maples in the Province. Nicotine sulphate and lead arsenate 

 respectively have been used against these pests. Galerucella decora 

 has been injurious to poplar, willow, cottonwood, etc., in various 

 localities, while black and white spruce were attacked by the spruce 

 gall louse [Chermes abietis]. Cutworms have proved to be the most 

 important pest of vegetable crops, grain, and lucerne. 



Tryon (H.). Bean Fly and other pests. — Queensland Agric. Jl., 

 /y\ Brisbane, vi, no. 1, July 1916, pp. 34-35. 



The best known method of controlhng Agromyza phaseoli consists 

 in burning the bean plants after the crop is gathered. Eggs present 

 on the leaves, etc., are thus destroyed. Ammoniacal Uquid has been 

 shown to be attractive to the fly. Experiments are being carried out 

 to determine the value of this and other compounds as controlling 

 factors. It is suggested that sowing should take place in July and 

 August, since the numbers of the insect decrease with the low tempera- 

 tures at the end of the year. 



Jarvis (E.). Grub Stage of the Cane-Beetle. — Queensland Agric. Jl., 

 Brisbane, vi, no. 1, July 1916, pp. 35-36. 



During the end of April and the beginning of May chmatic conditions 

 were favourable for the development of Metarrhizium anisopliae. 

 This fungus caused considerable mortality among mature larvae of 

 Lepidiota albohirta. It is recommended that all larvae parasitised in 

 this way should be left on the ground or if possible broken up and 

 buried in the furrows, in order that infection may be disseminated. 

 Experiments on the control of the larva by poisoning were completed 

 during June, but no details are given of the conclusions reached. 



