437 



TiMBERLAKE (P. H.). Desci'iptions of New Genera and Species of 

 Hawaiian Encyrtidae (Hymenoptera), ii. — Proc Hawaiian Eniom. 

 Soc, Honolulu, iv, jio. 2, June 1920, pp. 409-437, 23 figs. 



The new species described include Anagynis antoninae reared from 

 Antonina indica, Green, on Bermuda grass. 'Mxd Ximthoencyrtus ajMrus, 

 Timb., many individuals of which were reared from a mealy bug, 

 Trionymus insularis, Ehrh. Keys are given to both sexes- of the latter 

 genus. 



Other species dealt with include Coelopencyrtus orbi, sp. n., reared 

 from larvae of Odynerus orbus, Perk. ; Xesmatiaflavipes, gen. et sp. n., 

 which may prove to be an egg-parasite ; and Plagiomerus hospes, sp. n., 

 the host of which is probably a Diaspine scale. 



Cory (E. N.) & Travers (W. C). The Control of the Strawberry 

 Leaf Beetle. — Maryland Agric. Expt. Sfa., College Park, Md., Bull. 

 236, May 1920, pp. 133-136, 1 fig. [Received 4th Aug. 1920.] 



A series of dusting experiments for the control of Typophorus canellus 

 (strawberry leaf beetle) is described. Effective mixtures were : 

 85 per cent, hydrated lime and 15 per cent, calcium arsenate ; and 

 65 per cent, hydrated lime, 20 per cent, ground Bordeaux and 15 per 

 cent, lead arsenate. The second mixture seemed also to give some 

 control of leaf spot. Mowing before dusting gave a little advantage, 

 but hardly enough to make it an economical practice. 



The first application should be made about 1st July, and be followed 

 by a second in three weeks. Applications should be repeated if followed 

 in the course of several days by heavy rain, or if the injury to the 

 plants is seen to have continued on subsequent examination. 



Griddle (N.). Fragments in the Life-Habits of Manitoba Insects — IL 



— Canad. Entotn., Toronto, Hi, no. 6-7, June-July 1920, pp. 121- 

 125. 



The brome -grass cutworm. Trachea finitima cerivana, Smith, feeds 

 by night on brome-grass {Bromus inermis), hiding in the sheaves by 

 day. The larvae first attract attention about the middle of September, 

 when they gather into the grass sheaves that have been cut for seed 

 purposes. They hibernate, and pupate in May, the adults emerging in 

 June. This moth occurs over a wide area in Manitoba, Saskatchewan 

 and Alberta. In Manitoba the caterpillars are usually so abundant 

 in the sheaves at threshing time as to cause considerable annoyance, 

 but the actual damage done to the plants seems to be very small 

 considering the number present. This is probably due to the vigorous 

 growth of the grass after harvest, which thus largely overcomes the 

 insects' attack. It is not, therefore, a serious menance at the present 

 time ; but should it increase to still greater numbers, the loss would have 

 an important bearing on the pasture situation, brome-grass being 

 one of the most valuable fodder-plants of the w^est. 



Remedial measures may include ploughing in July and culti- 

 vating later to prevent further growth, thus starving the caterpillars, 

 destroying the insects shaken into the racks when threshing, using 

 brome-grass straw for fodder and burning the refuse round the 

 threshing place. 



