320 



The four Coccinellids were fed on the following species : Macrosiphmn 

 rosae, Reaum., M. nrticac, Kalt., M. {Siphonophora) ruhi, Kalt., M. (S.) 

 sonchi, L., Aphis pomi, DeG., A. sorbi, Kalt., A. urticaria, Kalt., 

 Phorodon hmnuli, Schr., Hyalopterus pruni, ¥.. Acyrthosiphon pisi, 

 Kalt., Myzus persicae, Sulz., M. cerasi, F., Cavariella capreae, F., 

 Aphis sambuci, L., and A.rumicis, L., when present on dock only. 

 C. decempunctata and C. undecimpunctata were not fed on the last 

 four named. A . rumicis was less palatable than any of the other species. 

 The number of Aphids eaten by larvae and adults in captivity varied 

 each dav. The average number devoured daily by different individuals 

 is given. The only other insects on which the Coccinellids were seen 

 to feed in captivity were small nymphs of froghoppers (Cercopids), 

 but it is improbable that this occurs in the field. 



Hibernation takes place in the adult stage, normally beginning in 

 the middle of October and ending in April. Both sexes hibernate, 

 though this has not been definitely proved to be the case with C. 

 decempunctata. C. undecimpunctata is commonly found in cracks 

 in post and rail fences, etc. C. septempunctata occurs in or under 

 vegetation. A. hipunctata has been found under loose bark of elm 

 trees outside an orchard, and is also thought to hibernate in houses. 



A description is given of an unsuccessful attempt to collect the beetles 

 into one place, where they could be safely stored over the winter and 

 placed out in early spring among the first crops likely to be attacked 

 by Aphids. 



Faes (H.) & Staehelin (M.). Les Traitements centre la Cochylis 

 (Ver de la Vigne) en 1921. — Ann. Agric. Suisse, Berne, xxiii, 

 no. 1, 1922, pp. 17-25. 



A number of experiments in the treatment of the vine moth [Clysia 

 amhiguella], carried out in 1921, are described in detail and the results 

 recorded in tables. Owing to the extraordinary dryness of that year, 

 the majority of the eggs of the second generation failed to hatch. 

 The tests described confirm the efficacy of pyrethrum-soap and nicotine- 

 copper sprays against the pest. The diifhculty of determining the 

 appropriate moment for nicotine treatment makes the pyrethrum- 

 soap spray preferable against the larvae of the first generation ; 

 nicotine, on the other hand, is indicated for the destruction of the eggs 

 laid by the second generation. The pyre thrum produced in the 

 Vaudois and Valais regions has proved to be remarkably good. 



Dry (F. W.). Annual Report of the Division of Entomology, Kabete, 



for the Year ending 31st March 1920.— AV/ria Dept. Agric. 



Ann. Kept., 1919-20, Nairobi, 1921, pp. 71-77. [Received 



13th April 1922.] 



During 1920 Antestia lineaticoUis, Stal (coffee bug) and Diarthro- 



thrips coffeae, WilHams (coffee thrips) were recorded for the first 



time from the Athi River and Donyo Sabuk district, but they did not 



occur in serious numbers. Parasitised eggs were found. Numerous 



outbreaks of caterpillars on flax occurred during the year, Phytometra 



{Plusia) orichalcea, F., being the best known species. 



McLaine (L. S.). The European Corn Borer in Southern Ontario.— 



Agric. Gaz. Canada, Ottaiva, ix, no. 1, January-February 1922, 

 pp. 22-24. 

 During the summer of 1921 scouting for the European com borer 

 [Pyrausta nubilalis, Hb.] was carried out in connection with the 



