260 



in 5 gals, hot water, and the two sohitions are then mixed and dikited 

 to 45 gals. A Chalcid has been found parasitic on the eggs of 

 A. lineaticoUis. 



No damage has been reported by the caterpillars of Parasa, and the 

 decrease of Metadrejpana glauca, Hmps., was probably due to the 

 unusually prolonged drought from October to March. Diarthrothrips 

 coffeae, Will. , was reported for the first time as causing serious damage ; 

 spraying with kerosene emulsion and destruction of the fallen leaves 

 are recommended as the best remedial measures ; 'another thrips, as 

 yet unidentified, will probably prove difficult to control owing to its 

 habit of concealing itself under the curled margins of the leaves. 

 Ceratitis capitata, Wied. (Mediterranean fruit-fly) is decreasing in 

 numbers. The stem borers, Apate monacha, F., A. indistincta, Murr., 

 and Dirphya (Nitocris) princeps, Jord., were reported, a Braconid 

 parasite of the latter being more in evidence than usual. The following 

 bait proved efficacious in combating Gryllus bimaculatus, de G., and 

 Gryllotalpa africana, P. de B. ; 1 lb. Paris Green, 14 lb. flour, 3 lb. 

 jaggery, the juice of 6 lemons and 3 gals, water. Baits proved useless 

 against millipedes attacking newly planted-out coffee, and collecting 

 had to be resorted to. 



\ Among the cacao pests no additions are made to the list of scale- 

 insects ; Toxoptera coffeae, Nietn. {theobromae, Schout.) attacked the 

 flower clusters and under-surface of the young leaves. Over-ripe pods 

 were found infested with larvae of Ceratitis punctata, Wied. Xyleborus 

 camerumis, Hag., attacks cacao, but causes death only in those 

 plants already infested with the fungus, Diplodia. The beetle, Adoretus 

 hirtellus, Castn., retards the growth and the caterpillars of the Lima- 

 codid, Parasa vivida, Wlk., feed on the under-surface of the leaves 

 in colonies ; when mature the cocoons of the latter are formed on 

 the trunks of the tree. Diacrisia macidosa, Cram., attacks the foliage 

 and Euproctis mediosqnamosa, B. Bak., the parenchyma of well 

 developed pods, forming corky scars. The Pentatomid bug, Libijaspis 

 (Plataspis) vermicellaris, Stal, attacks cacao twigs as well as Erythrina. 

 A table is given showing the duration of the stages of Helopeltis bergrothi, 

 Rent., var. (cacao mosquito). 



Pests of rubber include Aspidiotus destructor. Sign. (Bourbon scale), 

 which also occurs on banana, screw-pine, guava and mango ; and 

 the Scolytids, Xyleborus affinis, Eich., X. confusus. Eich., and X. per- 

 fofans, WoU., which attack trees already weakened from some other 

 cause. 



Tea suffered from Aspidiotus transparens, Green, Coccus discrepans, 

 Green, Helopeltis bergrothi, Eeut., var. and Gryllotalpa africcma, P. de 

 B., the latter feeding on the roots in the nursery. Cotton was infested 

 by the usual pests including : — Dysdercus spp. , Oxycarenus spp. , 

 bollworms and Leptoglossiis membranaceus, F. (leaf-footed plant bug). 

 The Cetoniid beetle, GnatJiocera trivittata, Swed., and Macrosiphum 

 granarium, Kirby, attacked flowers of wheat, and Aphis maidis, Fitch, 

 those of maize. Gliricidia maculata, used for shading cacao, was 

 attacked by Pseudococcus citri, Eisso, Coccus longulus, Dougl, and 

 Toxoptera coffeae, Nietn., and Erythrina by Aidacaspis chionaspis. 

 Green, 



'ihere were more locust swarms than in the previous year, and 

 they appeared to be much larger. 



