191 



Oedaleus and Autarches, together with brown crickets ; for their 

 control bag netting and trapping in ditches are necessitated. The 

 principal pests of trees from one to four years old are stem-girdlers 

 that gnaw ofi the bark or girdle vigorous coppice shoots. The 

 damage is done by the Longicorn beetles, Batocera ruhus, L., and 

 Plocaederus obesus, Gahan, which breed in the wood of Odina wodier 

 and numerous other soft woods occurring as unbarked logs and stacks 

 of fuel. The moth shoot-borer, Pammene iheristis, Meyr., is at present 

 not abundant, but as it bores in successive generations in the seed, 

 seedHng roots, and young shoots of sal, it is certain to become a pest 

 of considerable importance in the future. 



CouLONDRE (E.). Centre la Cochylis et la Pyrale. [Measures against 

 Clysia amhiguella and Sparganothis pilleriana.] — Progres Agric. 

 Vitic, Montpellier, Ixx, no. 46, 17th November 1918, p. 459. 

 [Received 19th February 1919.] 



The dusting of vines with " chaux-magnesie " is stated to control 

 Clysia ambiguella effectively if three treatments are given, the first, 

 10 days before flowering, the next, during the flowering, sulphur 

 being added, and the last, 8-10 days afterwards, though it is not 

 known whether it is the adults or the larvae that are affected by the 

 treatment. 



The use of solutions containing arsenic is absolutely efl&cacious 

 against Sparganothis pilleriana, provided that applications are made 

 in two consecutive years, the best time being 8 days before the 

 opening of the leaves, the pupae being at that time much more 

 sensitive to the action of the solution. This measure applied at the 

 time mentioned is also very destructive to C. ambiguella, without, 

 however, giving the absolutely satisfactory results obtained in the 

 case of S. pilleriana,. 



Crouzat (L.). La Pyrale -sa Destruction. [The Destruction of 

 Sparganothis pilleriana.] — Progres Agric. Vitic, Montpellier, Ixx, 

 no. 51, 22nd December 1918, pp. 586-589. 



Vines may be protected from attack by Sparganothis pilleriana by 

 careful cultivation of the soil beneath them in winter to kill the 

 pupae ; by washing the stems with boiling water, or by fumigating 

 them by means of sulphur matches, or by treating them with cold 

 arsenious acid emulsion applied as a wash or as a spray ; by removing 

 the leaves touching the grapes, to prevent the larva from webbing 

 these together and obtaining a shelter from which it may feed on the 

 grape; by adding sodium arsenate, or better still, arsenious acid to 

 the usual spring sprays with Bordeaux mixtures. 



PoRTiER (P.). D6veloppement completdes Larves de Tenebrio molitor, 

 obtenu au Moyen d'une Nourriture st6rilis6e h. haute Temperature 

 (130°). [Complete Development of Larvae of Tenebrio molitor 

 reared on Food sterilised at a temperature of 130°.] — C. R. Soc. 

 Biol., Paris, Ixixii, no. 2, 25th January 1919, pp. 59-60. 



Adult animals fed with nourishment sterilised by prolonged 

 subjection to a temperature above 120° C. [248° F.] suffer in health 

 and finally die, while the same conditions arrest the development of 



