389 



rubber was infested with Coptotermes gestroi. Kedele [Glycine sojaj 

 was attacked by Agromyzid borers, 70 per cent, of the crop being 

 lost in one case, and by EpilacJma sp., which has not been recorded 

 hitherto from this plant. 



Cinchona pests included Helopeltis antonii, Euproctis jiexuosa and 

 Miresa nitens. In the previous report [see this Review, Ser. A, vi, 

 p. 349] it was stated that Tetranychus telarius was more dangerous 

 than the other two mites, Tarsonemus translucens and Brevipalpus 

 obovatus, infesting cinchona. This is confirmed and the further 

 spread of T. telarius is recorded. Dusting with sulphur is said to be 

 entirely efficacious provided applications are made early and continued 

 regularly. 



Coconuts still suffered from the infestation with Brachartona cato- 

 xantha which began in 1917, The measures against Oryctes [rhinoceros] 

 gave good results. Other beetle pests were Rhynchophorus [fernigineus]^ 

 Mellisoblaptes [rvfovenalis], Hispids and Brontispa. Owing to the 

 dry weather the Hesperid butterfly, Hidari irava, did much harm, 

 especially in young plantations. A scale-insect also occurred on 

 coconut. 



Coffee was infested by Pseudococcus virgatus, and on a few estates 

 an attempt was made to combat it "with the help of the Coccinellid, 

 Cryptolaemus montrouzieri, imported from Hawaii by van der Goot, 

 whose trapping system was employed with great success against 

 the gramang ant [Plagiolepis longipes], thus reducing the green scale 

 [Coccus viridis] in many plantations. Other coffee pests included 

 Tylenckus sp., Xyleborus cojfeae and StepTianoderes Jianipei. Some 

 stored coffee of the 1916 crop was infested with Araecerus sp. ; 

 this coffee had a water-content of 10 '5 per cent. 



Pepper was attacked less seriously than in former years by Elas- 

 mognaihus greeni. Rice was infested with cutworms, Cirphis {Sideridis) 

 unipuncta, leaf-eating caterpillars, a Cecidomyid midge, Schoenobius 

 incertellus {bipunctifer), Chilo sp., and mole-crickets. 



Tobacco pests included Seiomorpha margalaestriata, Prodenia sp., 

 Phthorimaea {Gnorinioschema) heliopa and Heliothis sp. Owing to the 

 constant precautions employed, Lasioder ma .[serricorne] did compara- 

 tively little damage, though tobacco from the 1916, 1917 and 1918 

 crops were in storage. 



Tea suffered less than in 1917 from Helopeltis. H. antonii was 

 noted on Melia azedarach. The orange mite, Brevipalpus [obovatus '(\ 

 caused much loss on some estates. The leaf-rollers, Homona (Capua) 

 coffearia and Gracilaria theivora, decreased and in some cases were 

 entirely absent. Young tea-plants from nurseries were found on two 

 occasions to be infested with a species of Xijleborus. 



Leefmans (S.). De tweekleurige Klapperbladkever {Brontispa {froggatti. 



Sharp?)). [The Two-coloured Coconut Leaf-Beetle.]— MedefZ. 



Laboratorium voor Plantenziekten, Buitenzorg, no. 35, 1919, 



pp. 1-14, 3 plates. 



A note attached to this paper states that the Hispid beetle here 



discussed, has now been identified as Plesispa reichei, Chap., of which 



there does not appear to be any previous record from the Dutch East 



Indies. On the West Coast of Sumatra very young coconut plants, 



either in the nurseries or newly planted out, are chiefly attacked, but 



