Skerett (R. G.). Scientific Annihilation of the Tobacco Beetle. — 



Scientific American, Neiv York, cxv, no. 15, 7th October 1916, 

 pp. 319 & 336. 



This article describes an X-ray apparatus used at a cigar factory at 

 Tampa against Lnsioderma serricorne (cigarette beetle) [see this Review, 

 Ser. A, iv, p. 385]. The machine can treat 40,000 cigars an hour. 

 After being placed in boxes, they are put on a belt which travels through 

 the machine a distance of 23 feet in 20 minutes. The apparatus 

 contains two X-ray tubes, operating at 45,000 volts, and a current of 

 100 milliamperes is passed through them. For 4| minutes the cigars 

 are exposed to the direct rays and to reflected rays for the greater part 

 of 15 minutes. The machine is extremely simple in construction. 

 It enables cigar-manufacturers to carry on work throughout the year, 

 whereas, up to the present, it has been done chiefly before Christmas on 

 account of the loss in large stocks due to infestation by L. serricorne. 



Dubois (P.). Les Ennemis des Arbres Fruitiers. [Fruit-tree Pests.] — 

 La Vie Agric. el Rur., Paris, vi, no. 43, 21st October 1916, 

 pp. 306-309, 1 fig. 



This paper deals with Cheimatohia hrumata, which attacks many fruit- 

 trees, including the pear, cherry, peach, apricot and apple. The last- 

 named suffers very severe injury over a belt extending through France 

 from Normandy to the department of Gard, on the Mediterranean 

 coast, west of Marseilles. The life-history and habits are described, 

 together with control methods, banding being treated in detail. Non- 

 success in banding is due to incorrect construction, \\Tong date of 

 apphcation, and carelessness in up-keep. Eight formulae for banding 

 adhesives are recommended [see however this Review, Ser. A, iv, 

 p. 482]. 



Bezzi (M.). On the fruit-flies of the genus Dacus (s. 1.) occurring in 

 India, Burma and Ceylon. — Bull. Entom. Research, London, vii. 

 no. 2, October 1916, pp. 99-121. 



This paper includes keys to the Oriental and Australian genera of 

 Dacixae at present known and to all the Indian species. 



The following species, some of which are new, are recorded : — Dacus 

 (Leptoxi/da) longistylus, Wied., from Calotropis ; D. brevistylus, Bezzi, 

 from melon and water melon ; D. {Chaefodacus) ferrugineus, F., from 

 guava, loquat, mango, peach and pomelo ; D. {C.) ferrugineus dorsalis, 

 Hendel, from loquat, mango, peach, chillies, pomelo, guava, Solanum 

 verhascifolium, and pear ; D. [C .) ferrugineus incisus, Walk., from jak 

 {Careya arhwea), mango, guava and S. verhascifolium ; D. {C.) ferru- 

 gineus versicolor, var. nov., from guava, sapodilla and mango ; 

 D. (C) zonatus, Saund., from peach, fig, sapodilla, Bael fruit, Careya 

 arborea, mango, peach, and white gourd ; D. (C) tuherculatus, 

 sp. n., from peach ; D. (C) correctus, {Bactrocera zotuita, Bezzi nee 

 vSaund.), nom. nov., from peach, mango, and castor ; D. (C) duplicatus, 

 sp. n., from peach ; D. (C) diversus, Coq., from orange, jaman, 

 mustard, mango, and white gourd ; D. (C.) maculipennis, Dol., on 

 cholam and ^^^ld vine ; D. (C.) hageni, Meij., from gourd ; D. {C.) 



{C336) a2 



