413 



The damage from cane-borer [Rkabdocneinis obscura] was very small 

 in comparison with previous years, the Tachinid parasite [Ceromasia 

 sphenophori] now being well established. 



The cane aphis appeared as usual in many places, and although its 

 ravages are not to be compared with a leaf-hopper outbreak, it is 

 strongly recommended to attempt the introduction of more natural 

 enemies of this pest. 



Nematodes do not cause serious damage to sugar-cane, although 

 the stunted growth of the Lahaina variety may be partly due to their 

 action, but they have been found infesting other crops such as potatoes, 

 beet, etc., in much greater numbers than in previous years. The 

 Italian lupin and a variety of beans greatly encourage the spread 

 of this pest. 



Savastano (L.). Talune Notizie sul Novius e I'lceria riguardanti 

 I'Arboricoltore. [Some Notes for the Fruit-grower relating to 

 Novius cardinalis and Icerya purchasi.] — Boll. R. Staz. Speriment. 

 Agrum. Fruttic, Acireale, no. 32, April 1918, 2 pp., 2 figs., 1 plate 

 [Received 30th July 1919.] 



This bulletin supplies the fruit-grower with the elementary informa- 

 tion required for employing the Coccinellid, Novius cardinalis, against 

 the scale, Icerya purchasi. 



DE Stefani (T.). Interna agli Insetti che frequentano i Fichi ammalati 

 di Seccume nella Provincia di Palermo. [The Insects found on 

 Fig-Trees suffering from Withering in the Province of Palermo.] 

 — Annali R. Staz. Speriment. Agrum. Fruttic., Acireale, iv, 1916- 

 1918, pp. 1-5. [Received 30th July 1919.] 



Investigations were made to ascertain whether the bacteria causing 

 a withering disease of fig-trees in the Province of Palermo are distri- 

 buted by insects. The following species were observed : Coleoptera : — 

 Sinoxylon sexdentatum, Oliv., and Denops albofasciatus, Charp., both 

 very common ; Hymenoptera : — VesjJa crabro, L., and V. germanica, 

 F. ; Lepidoptera : — Cossus cossus, L. ; Diptera : — Musca domestica 

 and Platystoma umbrarum, F. ; Rhynchota : — Piezodoru^ incarnatus. 

 Germ., P. incarnatus var. alliaceus, Germ., and Ceroplastes rusci, F. 

 It would appear that the two last-named and especially the wasps 

 and flies are capable of disseminating the disease, but this is still 

 open to question. 



DE Stefani (T.). I Zoocecidii del Nocciuolo {Corylus avellana, L.) in 

 Sieilia. [The Insect-galls of the Hazel in Sicily.] — Annali R. Staz. 

 Speriment. Agrum. Fruttic, Acireale, iv, 1916-1918, pp. 171-186, 

 1 plate. 



The damage done to the hazel by gall-forming insects is increasing 

 in Sicily. The injury consists in a deformation of the buds which 

 either prevents or modifies the development of leaves and flowers. 

 A mite, Eriophyes coryligallarum, Can., is responsible for this injury. 

 Among its natural enemies are Arthrocnodax spp., Tyroglyphus minutus, 

 Targ., Caligonus virescens, Targ., and Gamasus vepallidus, Koch, 

 These natural checks have not however proved sufficient, and spraying 



