494 



Java and Borneo. The presence of these insects on tea need cause 

 no apj:)rehcnsion, as they feed on dead wood and bark, bark mosses, 

 etc. The statement, pubhshed in 1915, that " P. taprobanes occasion- 

 ally attacks tea in Assam and the Duars, congregating on the stems 

 of the bushes and eating the bark," is probably an exaggeration. 



Ultee (A. J.). Verslag over het Jaar 1920. [Report of the Besoeki 

 Experiment Station for 1920.] — Meded. Besoekisch Proefst., 

 Djember, no. 30, 1921, 25 pp. 



Boxes of cigars severely infested with Lasioderma [serricorne] were 

 sealed with paper in the customary manner and fumigated for one 

 week with carbon bisulphide, 100 cc. per cu. m. After the eighth 

 day all eggs, larvae, pupae and beetles were found to be dead ; and 

 all traces of the carbon bisulphide had disappeared in three weeks. 

 It is therefore possible to disinfect the boxes about one month before 

 shipment. 



Most of the pests received were the coffee-berry borer [Stephanoderes 

 hampei, Ferr.]. Others included mites on leaves of Hevea and white 

 and green scales, [Opafriim sabulosiim] and ants on coffee. On one 

 estate young coconut plants were severely injured by a beetle, 

 Brontispa sp., and lead arsenate proving ineffective, experiments 

 were made with a weak emulsion of kerosene-soap ; the result is not 

 stated. 



Priesner (H.). Neue europaische Thysanopteren. [New European 

 Thysanoptera.] — Wiener Ent. Ztg., Vienna, xxxviii, no. 4-8, 

 15th June 1921, pp. 115-122. 



The new species described are Dendrothrips karnyi, Taeniothrips 

 dianthi, and Euchaetothrips ingens. Keys are given to some of the 

 species of these genera. 



Pynaert (L.). Les Bananiers. — Bull. Agric. Congo Beige, Brussels, 

 xii, no. 2, June 1921, pp. 239-293. 



This paper, which forms one part of a series on the cultivation and 

 uses of bananas, deals with the insect pests and diseases found in the 

 various regions where the fruit is grown. The chief pest is Cosmopolites 

 [Sphenophorus) sordidus (banana borer), the biology and control of 

 which are briefly discussed. It is considered that the propagation 

 of natural enemies of this weevil is the most important remedy. 

 C. sordidus is of wide distribution in the tropics. In the West Indies, 

 Metamasius (5.) sericeus is the commonest banana weevil ; in Martinique, 

 C. sordidus (S. liratus) ; in Papua and the Sandwich, Solomon and 

 Society Islands, Rhabdocnemis (S.) obscnra ; in Madagascar, C. sordidus 

 {S. mnsaecola) ; and in Guinea and Madeira, C. sordidus {S. striatus). 

 A Dynastid beetle, Ligyrus ebenus {Tomarus bituberculatus),has habits 

 similar to C. sordidus and attacks bananas in the West Indies. Two 

 species of whiteflies attack bananas, including Aleurodicus cocois, 

 which is mainly a coconut pest in the West Indies and in tropical 

 America. A fly, Drosophila anipelophila, causes decay of ripe fruit 

 in hot weather. A moth, Casinia licus, generally a sugar-cane pest, 

 bores into the trunks of bananas in South America and Trinidad. 

 A fruit-fly, Dacus Jerrugineus, F. [tryoni, Frog.), is a pest of bananas 



