135 



Watson (J. R.). A new Physothrips from Oregon. — Florida Buggist, 

 Gainesville, iii, no. 2, September 1919, p. 32. [Received 22nd 

 January 1920.] 



Phijsotlirips hlacki, sp. n., is described, taken on California poppy 

 and dandelion in Oregon. 



Benson (E. F.). Third Bienn. Rept. Washington State Dept. Agric, 

 1st July 1916 - 30th June 1918, Oli/mpia, Wash., Ist November 

 1918, 191 pp., 3 plates. [Received 21st January 1920.] 



During 1916, a severe outbreak of the coulee cricket [Peramibrus 

 scabricoUis] occurred in Grant county and after having gradually 

 increased in numbers for several years, it became a menace to Eastern 

 Washington. A vigorous campaign was undertaken, and by means 

 of fencing and ditching and the use of gasoline torches many millions 

 of crickets were killed and collected. Great devastation has also been 

 caused during the past few years by grasshoppers in Okanogan county 

 and the numbers are increasing [R.A.E., A, vii, 510]. 



Experimental work with various sprays against codling moth 

 [Cydia ponionella] is described. Dust sprays have been tried and 

 have proved promising. For red spider [Teiramjchis] in orchards a 

 distillate oil emulsion at the rate of 1| gals, to 100 gals, water was 

 sprayed on the trees and cleared them of the mites with one application. 

 An outbreak of the Colorado potato beetle [Lepdnotarsa decendineata\ 

 was experienced in 1916. Hand-picking and arsenical spraying were 

 resorted to and by organised effort the numbers were greatly reduced 

 in 1917, while in 1918 scarcely any beetles were found. 



The Hessian fly {Mayetiolu dcstrudor) has made its appearance 

 in Washington State and in one locality has been so destructive that 

 the discontinuance of wheat growing has been recommended. 



Caesar (L.). Pear ^Mghi.^Canad. Hortic. & Beekeeper, Toronto, 

 Ont., xxviii, no. 1, January 1920, pp. 3-4, 3 figs. 



The symptoms and cause of pear blight are discussed. Ants feed 

 on the sweetened exudate symptomatic of the disease and thus pass 

 it on to the blossoms on which they also feed, whence it is disseminated 

 to other trees by bees. It may also be spread by sucking-insects 

 feeding first on diseased twigs and then on healthy ones. 



CoLLiNGE (W. E.). The Food of the Nightjar {Caprimulgus enropaeus. 

 L.)— J/. Minist. Agric, London, xxvi, no. 10, January 1920, 

 pp. 992-995, 1 fig. 



The nightjar {Caprimulgus europaeus) generally arrives in England 

 from its winter quarters in Africa in early May, and is of great benefit 

 to farmers and fruit-growers until its disappearance about mid- 

 September. During this time, out of 62 individuals examined, the 

 whole of the food taken consisted of insects, these including Hepialus 

 humuli, L., and H. lupulinus, L., Cheimatobia brumafa, L., Barathra 

 (Mamestra) brassicae, L., Euxoa (Agrotis) segefum, SchifF., Feltia (A.) 

 exrlamationis, L., Agrotis {Triphaena) jironuba, L., Melolontha melo- 

 lontha, L. {vulgaris, ¥.), Phi/llopertka Jiorticola, L., Amphimallas 

 {Rkizotrogus) solstilialis, L., Geotrujyes sp., Tipula oleracea, L., and 



