562 EXPERIMENT STATION RECORD. 



Two injurious insects, C. V. Piper {Washington iSta. Bxil. 7, pp. 

 121-127). — Descriptive and lite liistory notes on tlie pea weevil iBruehus 

 pisi) and cottony maple scale {Pidvinaria innumcrahilis), with remedies 

 and treatment. It is recommended that infested peas be inclosed in 

 air-tiglit boxes and treated for 24 hours to the fumes of carbon bisulphid 

 or immersed for 1^ minutes in water at a temperature of 145'^ F., or 

 else kept for two years in tight bags or boxes, during which time the 

 beetles will emerge and die. 



Against the cottony maple scale spraying with kerosene emulsion in 

 May and June is advised. It may be necessary to make two sprayings 

 a fortnight apart. 



Some general remarks to farmers in regard to insects are added, and 

 directions given for sending insects to the station. 



Insect Life ( U. S. Vept. Agr., Division of Entomology^ Insect Life, 

 vol. VII, No. 1, pp. 1-54, figs. 17). — The cranberry girdler, S. H. Scudder 

 (pp. 1-5). — Notes on the life history of Gramhus topiarius, of which 

 technical descriptions and figures are given. The moth lays its eggs 

 in the early part of July on the cranberry plants, and the larvse, which 

 hatch in about 7 days, quickly form filmy silk galleries along the pros- 

 trate stems or runners, in which they eat, girdling the stems and 

 destroying the vital parts of the i)lauts. They form coarse cocoons of 

 mingled sand and -silk at the surface of the ground in November, but 

 do not change to chrysalids until the following spring. As it is found 

 that the caterpillars within their cocoons can withstand submergence 

 during the entire winter, it is advised that the crop be picked early in 

 October and the bog then flooded for a fortnight. 



Two parasites of important scale insects, L. 0. Hoicard (pp. 5-8). — Illus- 

 trated and technical descriptions of Prospalta murtfeldtii and Ablerus 

 cUsiocampce, new genera and species of Hymenoptera attacking Aspidi- 

 otus uv(C and Chionaspis furfur us. 



The buffalo tree hopper, G. L. Marlatt (pp. 8-14). — Illustrated and 

 descriiitive notes on the life histories of the true buffalo tree hopper 

 {Geresa hubalus) and an allied species, G. taurina. The first species is 

 variously injurious in orchards in the West, depositing its eggs under 

 the bark by making longitudinal series of short, nearly parallel slits, 

 in two lines, in the twigs. The injury causes the limbs to become very 

 scabby and rough, easily broken by the wind, and liable to attack by 

 wood-boring insects. In addition to orchard trees, the willow, cotton- 

 wood, maple, and various garden vegetables and weeds are fed upon 

 by the larvte. The only remedial measures recommended are prevent- 

 ive ones by limiting foreign vegetation about and in orchards and 

 nurseries and vigorously pruning the punctured limbs. 



Supplementary notes on the straivherry tceevil, its habits and remedies, 

 F. H. Ghittenden (pp. 14-23). — Notes on the distribution, prevalence, 

 habits, and life history of Anthonomiis signatus and details of experi- 

 ments for its destruction, with remedies against it. The weevil appears 



