160 



De Charmoy (D. d'E.). Summary of Investigations on Insect Pests 

 during the five months, July-November, 1914. — Mauritius Dept. 

 Agric, Div. Entom., 4th December 1914, 2 pp. 



When maize was sown in the spaces between blocks of sugar-cane 

 infested with Sesamia vuteria (nonagrioides) on an estate in Moka, the 

 results were excellent, the young plants being practically free of borers, 

 while other fields, in close proximity, were badly infested. Since the 

 caterpillars remain grouped on the maize for some days, the destruc- 

 tion of these plants destroys the borers on a large scale. Fresh seed 

 should be sown in the place of attacked plants that have been uprooted. 

 Plants 2 feet high should be removed, buried or fed to animals. Cera- 

 phron beneficiens has been found parasitising Sesamia eggs, and should 

 be bred and liberated in infested fields. Against Porjje bjerkandrella, 

 the caterpillars of which were prevalent on artichokes, Paris green or 

 lead arsenate should be sprayed on the plants early or even before signs 

 of infection. " Pou a poche blanche," Pulvinaria iceryi (gasteralpha), 

 a serious pest of sugar, has been investigated, as also its parasite, 

 Aphycus sp. The Pois Sabre borer was observed in the nort,h of the 

 island, seriously injuring Pois Sabre {Canavalia ensifonnis) and com- 

 pletely destroying the plants when grown in rotation. This pest can 

 only be controlled by cutting out the egg-masses with a knife, or 

 destroying them in situ, by pressure, since the larvae eat their way 

 into the plants immediately after hatching. 



Norme per la disinfezione delle viti destinate al commercio. [Regula- 

 tions for the disinfection of vines intended for commercial 

 purposes.] — Riv. Vitic. Enol. Agrar., Conegliano, xx, no. 24, 

 15th December 1914, p. 561. 



Provincial Phylloxera inspectors and technical inspectors are 

 required to be present at the disinfection of shps and graftings, if 

 requested to do so by the proprietor of a vine nursery. The operation 

 is conducted in the manner adopted in Government nurseries — viz., 

 the material is submerged for 5 minutes in hot water in wooden tanks. 

 At the moment of immersion the temperature of the water must be 

 132° F., and it must not fall below 128° F. during the operation. The 

 water must be stirred in order to ensure uniformity of temperature. 

 The inspector is strictly required to be present throughout the 

 operation, which must be suspended during any absence on his part. 

 After treatment, the material must be bound up in bundles, and these 

 may be secured with a lead seal stamped by the official, who may 

 issue a certificate if such be desired. 



Somes (M. P.). The Acridiidae of Minnesota.— Supplement to Fifteenth 

 Rept. Minnesota State Entotn., 1913 and 1914, St. Anthony Park, 

 1st December 1914, 100 pp., 4 pis., 10 figs.* 



This is a monograph of the Acridiid grasshoppers of Minnesota, 

 giving field notes, life-histories, and distribution, with keys to the 

 genera and species. A bibliography of 17 works is appended. 



♦Also published as Bulletin no. 141 (Technical) of the Minnesota Agri- 

 cultural Experiment Station, July 1914. 



