1019] ECONOMIC ZOOLOGY — ENTOMOLOGY. 753 



rye. An undetermined membracid which attacks the stems of beans below the 

 surface of the Boll by flrsl making a cone-shaped npi ning in the soil around the 

 stem was a source of damage to the bean crop. 



[Report on] division of zoology and entomology {Washington Kla. Hut. 168 

 (1019), pp. 84-88, fig. /).— This la a brief statement of the work of the year 

 ended June .'><», L918, under the headings of cranberry Insects, Immunity of 

 San Jose scale t<> sprays, taxonomy of Insects, and biological survey of Wash- 

 ington, 



It Is stated that newly Introduced Insects have for Beveral years been in- 

 creasing to such an extent as to threaten the cranberry Industry of southwest- 

 ern Washington, several bogs having had their entire crop ruined. A prelimi- 

 nary survey made during 1917 has shown the main damage to he done by the 

 black-head lire worm, which lias acquired habits remarkably different from its 

 behavior in the Blast, in that it is mainly destructive to fruit Studies con- 

 ducted in cooperation with the Bureau of Entomology of the U. S. l>epartnient 

 of Agriculture have shown the larvae of the first brood to be most abundant 

 during the latter part of May, those of the second brood the middle of August, 

 while, unlike the eastern form, a partial third brood of larvae appears during 

 September. Tests of sprays show it necessary to use a spreader, such as soap 

 or glue, with the insecticide, and better results were generally obtained with 

 nieotin spray than with arsenicals. Locally a native weevil (Gcodcrccs in- 

 comptus) was found destructive, and the cranberry girdler {Crambus hortuelr 

 his) was widespread, though causing relatively little injury. 



In immunity work with the San Jose scale, many thousands were transferred 

 to potted plants at Pullman from several regions in the State, but absolute 

 failure was repeatedly met with in attempting to get the San Jose scale to 

 thrive at Pullman, either outdoors or in the insectary. More successful results 

 were obtained in the exchange of infested trees between Clarkston and We- 

 natchee. Counts of many thousands of scales at definite intervals subsequent 

 to spraying at Clarkston, Walla Walla. Yakima, and Wenatchee showed a 

 marked degree of difference in resistance to the polysulphid sprays, the scales 

 from Wenatchee being relatively highly susceptible, while those from Clarkston 

 showed a striking resistance. 



In tests of many insecticides in connection with the scale resistance work, 

 the highest grade of miscible oils used at 5 per cent strength proved much 

 quicker acting and more efficient than the customary polysulphid sprays. 

 Samples of one widely used brand obtained in different localities, however, 

 lacked uniformity to an astonishing degree. 



Notes from Tasmania. V. M. Littles (Jour. Eoon. Ent., 11 {,1918), No. 6, pp. 

 / t 72-.' f T5).— These notes relate to several insects of economic importance in 

 Tasmania, including the currant clearwing moth {Aegeria [Sesia] tipuliformis) , 

 the Rutherglen fruit bug (Nysius vinitor), the codling moth, the common ear- 

 wig (F.orfivula auricularia) , and the harlequin fruit buu r {Dindymus versi- 

 color). 



Insects attacking the potato crop in Connecticut, W. EL Brixton (Connecti- 

 CUt State Sta. Hut. ..'08 (WIS), pp. 108-119, pi*. 8, figs. 6).— This is a popular 

 summary of information on the more important insect enemies of the potato in 

 Connecticut and means for their control. 



Some new insect enemies of greenhouse and ornamental plants in New 

 Jersey, H. B. Weiss {New Jersey Stas. Circ. 100 (1918), pp. 3-19, figs. S2).— 

 Brief accounts are given of a number of insect enemies of greenhouse and 

 ornamental plants, including the ash leaf bug [Neoborus amoenus), the rhodo- 

 dendron lace bug {Leptobyrsa rhododendri), the azalea lace bug (Stephanitis 

 120653°— 19 5 



