397 



The only Coleoptera experimented with were the common cock- 

 chafer {Melolontha melolontha) and RMzotrogus solstitialis. Neither 

 of these re-acts on the introduction of the bacillus into the general 

 body cavity ; inoculated beetles die in 20 to 24 hours after inoculation. 

 It would seem that the bacillus multipUes less actively in beetles 

 than in the bodies of Lepidopterous larvae, but it must be remembered 

 that the mean temperature during the time of experiments upon 

 cockchafers was not very high. 



Porthetria dispar is therefore the only species examined that offered 

 any resistance to the multiplication of B. hoplosternus in the blood. 

 As a general rule, the larvae of this moth are only slightly susceptible 

 to the inoculation of parasitic microbes, with the exception of Cocco- 

 bacilli. Few larvae are found to be infected under natural conditions, 

 especially during the first stage of invasion ; towards the end of 

 the period of infestation among belated and weakened individuals 

 the bacilli are more common and cases of immunity less frequent. 



Gautier (CI.). Recherches physiologiques et parasitologiques sur les 

 Larves de L§pidopt6res nuisibles. — C.R. Soc. Biol, Paris, Ixxxii, 

 no. 19, 21st June 1919, pp. 720-721. 



The Braconid, Apanteles glomeratus, L., is a well-known internal 

 parasite of Pieris brassicae, and has also been known to parasitise 

 P. rapae and other Pierines. Out of a hundred individuals of P. rapae, 

 taken from a cabbage field in which 95 per cent, of the individuals 

 of P. brassicae were parasitised by A. glomeratus, only two parasites 

 emerged, the others all reaching maturity. The cocoons of A. glome- 

 ratus obtained from either host were coloured sulphur yellow, indicating 

 that the yellow pigment is furnished by the larvae of the Braconids, 

 for the blood of P. rapae is bright green. In the author's opinion 

 it is only by chance that larvae of P. rapae are parasitised by A. glome- 

 ratus, and generally on account of their proximity to P. brassicae ; 

 further investigations on this point are being made, and also on the 

 possibility of parthenogenesis in A. glomeratus. Hyperparasites of 

 A. glotneraius include Pteronnalus puparuyyi, Hemiteles fulvipes, Tetra- 

 stichus rape and Dibrachys boucheanus. 



Feytaud (J.). Moyens de Lutte centre TEud^mis et la Cochylis. 



[Remedial Measures against Polychrosis botrana and Clysia 

 ambiguella.] — Bull. Soc. Elude. Vulg. Zool. Agric, Bordeaux, xviii, 

 nos. 3-4, 5 & 6, March-June, pp. 17-23, 33-42 and 49-54, 4 figs. 



The various remedial measures against the vine moths, Polychrosis 

 botrana and Clysia ambiguella, that have previously been noticed in 

 this Review are discussed. A chart is given of the life-histories of 

 these moths, and the usual winter treatments, including hot water 

 spraying, scraping or removing the bark, and washes are reviewed. 

 The author considers that a rational winter treatment would include 

 the removal of bark over about one-third of the vineyard and washes 

 over the other two-thirds that had been scraped one or two years 

 previously. Insecticides for the spring and summer include lead 

 arsenate, nicotine and pyrethrum, and general recommendations for the 

 use of these are given. Bordeaux mixture with the addition of nicotine 

 is said to increase the crop by one-third to one-half. Many kinds of 



