382 



cyanide is a valuable remedy. Large groves of these trees in Kansas 

 and other places, have been completely rescued from the attacks of 

 boring and girdhng insects, by means of this poison. It is suggested 

 that where discolouration has been observed [see this Review, Ser. 

 A, iii, p. 73], it is due to a reaction between the tannic acid in the bark 

 and iron in the form of iron sulphate, contained as an impurity in the 

 potassium cyanide. 



DoDSON (W. R.). 27th Ann. Rept. Agric. Expt. St a., Louisiana State 

 Univ. for 1914; Baton Rouge, 1915, 32 pp. 



In the department of entomology, several crop pests have been 

 recorded, including the cottony cushion scale {Icerya purchasi), Phyl- 

 loxera galls on pecan trees, and citrus canker. The control of the sugar- 

 cane borer by means of parasites has had successful results. The 

 study of the mealy-bug [Pseudococcus) and its relation to the Argentine 

 ant {Iridomyrmex humilis) has been continued. 



Kehring (H.). Ephestia elutella (?) injuring Earthnut Cake in France. 



— Mthly. Bidl. Agric. Intell. & PI. Dis., Rome, vi, no. 2, February 



1915, pp. 319-320. [Abstract from Bulletin des Seances de la 



Societe nationale d' Agricidture de France, Paris, Ixxiv (1914), 



pp. 864-866.] 



The larvae of Microlepidoptera cause damage to stored ground-nut 



cakes by drilling galleries in them. The commonest species seems to 



be Ephestia elutella. The female moth oviposits on the surface of 



the cakes and the larvae penetrate into the interior on hatching. 



Infestation increases with time and cakes which had been stored for 



10 or 12 months became hollow and crumbled to pieces when handled. 



The author believes that infestation may be checked by trapping most 



of the moths of the first brood in spring before the successive annual 



generations occur. Ordinary earthen pots containing a 10 per cent. 



solution of molasses, should be satisfactory. 



Savelli (M.). Steganoptycha pinicolana on Larches in the Valley of 



Aosta. — Mthly. Bull. Agric. Intell. & PI. Dis., Rome, vi, no. 2, 



February 1915, p. 319. [Abstract from Cronaca Agricola, Turin, 



XX (1914), p. 177.] 



In July 1914, the larvae of the Tortricid, Enarmonia diniana, Gn., 



{Steganoptycha pinicolana, ZeU.) occurred in large numbers on the 



larches in the upper part of the valley of Aosta. This pest was first 



recorded in Italy as causing severe damage to larch woods at Argentera 



and Bersezio (prov. of Cuneo) in 1901. A detailed description of 



the various stages of this moth is given. 



GooT (P. van der). Over Boorderparasieten en Boorderbestrijding. 



[On (sugar-cane) borer parasites and control of borers.] — Meded. 

 v.h.Proefst. voor de Java-Suikerindustrie,Soerahaia, v, no. 4, 1915, 

 pp. 125-176, 3 plates. [Received 13th May 1915.] 



Borers are still the most important pests of sugar-cane in Java, and 

 since Zehntner studied them in 1895-1900, there has been no diminution 



