513 



Hinds (W. E.). Report of the Entomologist. — Thirty-second Ann. 

 Rept. Alabcuiia Agric. Expt. Sta., Auburn, January 1920, pp. 26-27. 

 [Received 28th September 1920.] 



The rice weevil [Calandra oryzae] was unusually abundant in 1919. 

 Simple and effective methods of control have been developed as a 

 result of investigations, and have been demonstrated to farmers, who 

 have in many instances put them into practice with good results. 

 The first important factor is the selection of a type of seed- ear resistant 

 to weevil attack, that is, ears that have an exceptionally tight- fitting 

 shuck, the tip being well covered and protected against the first 

 entrance of the insect. Much success has been gained with the trap- 

 plot method, by wliich the first generation of weevils is concentrated 

 and can be controlled economically on the small crop of maize that 

 is grown on the trap -area. 



Work in soil fumigation has been continued, and the value of 

 sodium cyanide as a fumigant, particularly in greenhouse soils, has 

 been tested, but the results have been so conflicting that further 

 study will have to be made before any conclusions can be reached. 

 Investigations are also being made to determine the possibiHty of 

 destroying Nematodes that have become embedded in the roots of 

 growing plants, without injuring the plants themselves. 



Bernard (C). Over Psychiden (Zakrupsen). [Bagworms.] — De Thee, 

 Buitenzorg, i, no. 2, June 1920, pp. 43-44, 2 plates. [Received 

 28th September 1920.] 



These notes on bagworms supplement some previously published 

 [R.A.E., A, viii, 455]. The caterpillars, which have not yet been 

 identified, have done no serious injury so far, chiefly because the 

 youngest leaves are not attacked. 



A severe infestation by Clania crameri is recorded from the east 

 coast of Sumatra. The caterpillars appeared in newly-pruned plots, 

 and the lack of leaves caused them to feed on the bark of the stems 

 and twigs. The bushes recovered very slowly. Intensive collection 

 prevented a further increase of the pest. 



Bernard (C). Djamoer oepas op Sesbania. [The Fungus, Corticium 

 javanicum, on Sesbania.] — De Thee, Buitenzorg, i, no. 2, June 

 1920, pp. 44-45. [Received 28th September 1920.] 



Sesbania, which is used for green manure, has been severely attacked 

 by Corticium javanicmn. It is known that many plants, including 

 Legurainosae, may be attacked by this fungus under special conditions. 

 In this case the fungus appeared after infestation by a cicada, Lawana 

 sp., which has a waxy secretion and sweetish excrement. The trees 

 were covered first with the whitish wax, then with the black crust of 

 Capnodiutn, and, as a result of the dampness beneath the epiphytic 

 mycelium, with C. javanicum. 



(727) Wt.1850/163. 1,500. 12.20. B.&F..Ltd. Gp.11/14. A 



