342 



ten [R.A.E., A, vii, 341.]. Throughout the winter watch was kept 

 for nests. The details of the suppression work in various towns are 

 given and are summarised in a table. 



Zappe (M. p.). Experiments to Control the Chrysanthemum Gall 

 Midge, Diartkronomyia hypogaea, Loew. — Conn. Agric. Expt. Sta., 

 New Haven, BuU. 218, 1920, pp. 161-165. 



Owing to increasing damage to chrysanthemums by Diartkronomyia 

 hypogaea, Lw. (chrysanthemum gall-midge) in the greenhouses of 

 Connecticut, experiments were undertaken in January 1919 to find 

 some simple method of controlling the insect. The eggs are laid on 

 the top of the plant w^here the new leaves are unfolding and as the 

 leaves grow larger the larvae make their way into them. Shortly 

 before the flowers open, the larvae enter the stem, which they enlarge 

 and weaken, causing the blossom to droop. Some varieties are fav 

 more liable to attack than others, and in one greenhouse some may be 

 badly infested and some quite healthy. Fumigation with hydro- 

 cyanic acid gas has been recommended, but is costly and requnes 

 repetition every few days as it is effective against the adults only. 

 There is also danger of injmy to the fohage with its use. The experi- 

 ments described include treatment \\ith carbohc acid emulsion, 40 

 per cent, nicotine-sulphate, lead arsenate, fish-oil emulsion, powdered 

 tobacco and scalecide. The results showed that the best time to deal 

 with this pest is while it is still in the egg-stage or before the young 

 larvae have disappeared within the leaf. Scalecide kiUed all eggs and 

 young larvae but injured the fohage. Nicotine sulphate (40 per cent.) 

 with soap, apphed every three or foiu" days, is a satisfactory remedy 

 and is probably the easiest and best spray for commercial florists to 

 use. 



Brixton (W. E.). Insects attacking Squash, Cucumber and Allied 



Plants in Connecticut. — Connecticut Agric. Expt. Sta., New Haven, 



Bull. 216, December 1919, 51 pp., 8 plates, 9 figs. [Received 2nd 



June 1920.] 



An account is given of the chief insect pests of such crops as squash, 



pumpkin, cucmnber and melon in Connecticut. They include 



Diahrotica vittata, F. (striped cucumber beetle), D. cluodecimpunctata, 



01. (twelve-spotted cucumber beetle or southern corn root worm), 



SmintJmrus hortensis, Fitch (springtail), Epitrix cucumeris, Harris 



(cucumber or potato flea-beetle), Melittia satyriniforniis, Hb. (squash 



vine borer), Epilaehna borealis, F. (squash lady-beetle), Anasa tristis, 



DeG. (squash bug), Papaipema nebris, Gn. (nitela, Gn.) (stalk borer), 



Aphis gossypii, (rlov. (melon aphis), Macrosiphum cucurbitae, Midd. 



(squash aphis) and the w^hitefly, Aleitrodes (Asterochiton) vaporariorum, 



Westw. 



Service and Regulatory Announcements : November-December 1919. 



— U.S. Dept. Agric, Fed. Hortic. Bd., Washington, D.C., no. 66. 

 19th February 1920, pp. 117-128. [Received 3rd June 1920.] 



Field surveys to determine the situation with regard to the pink 

 boUworm [Platyedra gossypiella] have been continued since the last 

 Announcements were issued [R.A.E., A, viii, 234]. In some districcs 



J 



