1916] ECONOMIC ZOOLOGY ENTOMOLOGY. 261 



trees on which this mixture was applied. Tliis addition of sweetening to the 

 arsenate has the serious disadvantage of making the spray easily washed off 

 by rains. Arsenate of lead used without molasses was less effective in protect- 

 ing the trees, although it killed some beetles and it was to an extent repellent 

 to them. Lime in the amount in which it is added to an arsenate-of-lead spray 

 was not repellent. 



" Forty per cent nicotin sulphate applied with water at the rate of 1 : 600, 

 with or without soap, was effective as a contact spray. Weaker dilutions of 

 nicotin sulphate and soap carbolic acid solutions, although apparently effective 

 at the time of application, did not have a permanent effect. . . . 



" Sweetened arsenate of lead is recommended for cherry trees because of its 

 efficiency in killing the beetles and because its effect is continuous in favorable 

 weather. Rain destroys the effectiveness of this spray. The combination found 

 most useful is 5 lbs. of arsenate of lead, 1.5 gal. of molasses, and 50 gal. of 

 water." 



A bibliography of 25 titles is included. 



Hyperaspis binotata, a predatory enemy of the terrapin scale, F. L. Siman- 

 TON ([/. S. Dept. Agr., Jour. Agr. Research, 6 {1916), No. 5, pp. 197-205, i)ls. 2, 

 fig. 1). — The economic importance of this coccinellid beetle {H. binotata) as an 

 enemy of lecanium scales was impressed upon the author during the course of 

 investigations of the terrapin scale, previously noted (E. S. R., 35, p. 156). The 

 adult beetles do not feed upon the mature scales, but destroy the young and 

 also attack aphids and other soft-bodied insects, being particularly effective 

 in controlling the cottony maple scale and terrapin scale. The beetle occurs 

 in a large part of the territory east of the Mississippi River, being most abun- 

 dant in the Atlantic States from Connecticut to Maryland, but is common from 

 New Jersey to Illinois, and even extends west of the Mississippi in some States 

 to the semiarid region. 



Technical descriptions are given of its life stages. The eggs, which are 

 salmon colored, are deposited singly on twigs adjacent to the host. The life 

 cycle requires 39 days and is as follows : Incubation, 7 days ; first instar, 3 

 days; second instar, 2 days; third instar, 3 days; fourth instar, 12 days; and 

 pupa, 12 days. 



Wirewonns destructive to cereal and forage crops, J. A. Hyslop (Z7. S. 

 Dept. Agr., Fanners' Bui. 725 (.1916), pp. 10, figs. 6). — This is a general discus- 

 sion of wireworras and their control based upon the author's investigations, 

 previously noted (E. S. R., 32, p. 555). 



Prothetely in the elaterid genus Melanotus, J. A. Hyslop {Psyehe, 23 

 {1916), No. 1. pp. 3-6, pis. 2, fig. 1). 



Elateridae and Throscidse of the Stanford University expedition of 1911 

 to Brazil, J. A. Hyslop {Psyche, 23 {1916), No. 1, pp. 16-21, pi. 1, fig. 1). 



Observations on the life history of Meracantha contracta, J. A. Hyslop 

 {Psyche, 22 {1915), No. 2, pp. U-J,8, pi. 1, fifgs. 2). 



Notes on the habits of weevils, W. D. Piekce {Proc. Ent. Soc. Wash., 18 

 {1916), No. 1, pp. 6-10). 



The buff-colored tomato weevil (Desiantha nociva), W. W. Fboggatt {Agr. 

 Gas. N. S. Wales, 26 {1915), No. 12, pp. 1065, 1066).— This weevil has a wide 

 range over the eastern and southern coasts of Australia. In New South Wales 

 it damages the young buds and shoots of fruit trees and vines in early summer, 

 but was not known as a serious field-crop pest xmtil 1915. 



Beekeeping in Wisconsin, N. E. and L. V. France {Wisconsm Sta. Bui. 264 

 {1916), pp. 3-28, figs. 11). — A general account based upon many years' experi- 

 ence, the senior author having been state apiary inspector for a period of 18 

 years. 



