172 



cannibalistic habits. Though the chief damage to the tree is done 

 by the larvae, the incisions made bj' the adults for oviposition afford 

 read}^ access to parasitic fungi. 



All infested trees, whether grown in natural regeneration or in arti- 

 ficial plantations, should be cut down and burned by the end of June 

 before the beetles emerge. All beetles should be collected between 

 July and August. In the case of a few tiees oviposition ma}^ be largely 

 prevented by ensheathing the lowermost portions of the stem for about 

 18 inches above the ground-level with a close mesh netting or b}- 

 coating with some repellent [R.A.E., A, vii, 301]. 



The natural enemies of this beetle include an Ichneumonid, but 

 no fungus was observed to infest it. 



OsHiMA (M.). Formosan Termites and Methods of preventing their 



Damage. — Hawaiian Forester & AgriatUnrist, Honohiht, xvii, 

 nos. 11 and 12, November and December 1920, pp. 314-321 

 and 346-355. 



This is an extract from a paper alreadv noticed [R.A.F., A, viii, 

 3011. 



Ehrhorn (E. M.). Division of Plant Inspection. — Hawaiian Forester 

 & Agriculturist, Honolulu, xvii, no. 12, December 1920, pp. 

 359-361. 



The pests intercepted during November 1920 included ants, 

 Prenolepis sp., found in yams from Japan, and Lepidopterous larvae 

 in beans from Fiji. 



PicARD (F.). Les Microlepidopteres de la Vigne, Pyrale, Coehylis, 

 Eud^mis. [The Microlepidoptera of the Vine, Sparganothis 

 pilleriana, Clysia amhiguella and Polychrosis botrana.] — Progris 

 Agric. Vitic, Montpellier, Ixxvi, nos. 1, 2, 3 and 5 ; 2nd, 9th, 

 16th and 30th January 1921, pp. 8-13, 41-45, 61-69 and 115- 

 119. 



A full account is given of these three important vine pests, the 

 information being largely collected from previous papers in the same 

 journal. The chief morphological distinctions between these moths 

 are described, and it is pointed out that while Sparganothis pilleriana 

 has only one generation in a year, Clysia ambiguella has two and Poly- 

 chrosis botrana three. The larvae of the first-named attacks chiefly 

 the foliage, the other two the fruit only ; 5. pilleriana deposits eggs 

 in masses on the leaves ; C. ambiguella and P. botranalay them singly 

 on the fruit ; S. pilleriana and C. ambiguella fly at night, P. botrana 

 in morning and evening twilight ; 5. pilleriana hibernates as 3'oung 

 larvae, the other two species as pupae. 



This last fact has a great bearing on the winter treatments and 

 their efficacy ; it must be remembered that in the spring 5. pilleriana 

 emerges from the bark as a larva, while C. ambiguella and P. botrana 

 emerge from the stock in the adult stage. The influence of various 

 factors on the incidence of the pests is discussed ; these include mildew, 

 temperature, humidity, force and direction of the wind, nature of the 



