•192 



wireworms occurred in July. The cotton boll weevil [AntJionomus 

 grandis] was present in great numbers. In certain localities sowings 

 of wheat made prior to 7th October were infested with the Hessian 

 fly [Mayetiola destructor']. 



McSwiNEY (J.). Report of the Agricultural Department, Assam, 

 for the Period from 1st July 1918 to 31st March 1919, Shillong, 

 1919, pp. 6-8. [Received 12th September 1919.] 



Rice was attacked by Hispa armigera (rice Hispid) ; ScJioenobius 

 incertellus {bipunctifer) (rice-stem borer) ; Leptocorisa varicornis 

 (rice bug), which was checked by bagging ; Spodoptera mauritia and 

 Prodenia sp. (swarming caterpillars) and Cirphis sp. (army worm), the 

 former being controlled by means of nets dragged over the field, the 

 latter by dragging ropes over the crops and trapping with heaps of 

 grass. Another moth, NympJmla depunctalis, was dealt with by 

 dragging ropes across the field, the water having been covered with a 

 thin layer of kerosene oil, or where convenient, run off altogether. 

 The removal and burning of infested patches was recommended for 

 the scale, Ripersia sacchari. The mustard sawfly, AtJialia p)roxima, 

 was checked by dusting the plants whilst still wet with dew with a 

 mixture of powdered soil and lime sprinkled with kerosene oil. 

 Diatraea sp. is stiU active among sugar-cane, and the Arctiid moth, 

 Diacrisia obliqua, against which hand-picking of the egg-masses is 

 recommended, caused severe damage to jute, which was also attacked 

 by crickets. Potatoes and other vegetables were attacked by cut- 

 worms and red ants. A Pentatomid bug, Rhynchocoris sp., caused 

 much damage by sucking the juice of the green fruit of orange trees 

 causing them to drop or the pulp to become hard and dry ; the tree 

 ants, Oecophylla STnaragdina, were noticed preying on this pest, which 

 was also caught by means of sticks coated with gum. A scale, 

 Monopldebus sp., was greatly reduced on orange trees by clearing the 

 base and immediate surroundings of the tree. 



ZiMMERLEY (H. H.). Grcenhouse Tomato Growing in Virginia. — 



Virginia Truck Expt. Sta., Norfolk, Bull. 26, 1st January 1919, 

 23 pp., 2 figs. 



Pests of tomatoes grown under glass include Aleurodes vaporariorum 

 (greenhouse whitefly), which is found principally on the under-side of 

 the leaves. A combined fumigation of tobacco and hydrocyanic 

 acid gas has given satisfactory results against it. 



The Nematode, Heterodera radicicola, enters the roots and causes the 

 formation of galls, resulting in weak, stunted growth and even death 

 of the plant. Soil sterilisation by means of steam is the only remedial 

 measure known. 



Smith (L. B.). The Life History and Biology of the Pink and Green 

 Aphid {Macrosiphum solanifolii, Ashmead). — Virginia Truck Expt. 

 Sta., Norfolk, BuU. 27, 1st April 1919, 79 pp., 11 figs. [Received 

 12th September 1919.] 



A detailed account is given of the life-history of and methods of 

 dealing with Macrosiphum solanifolii, Ashm. [see this Review, Ser. A, 

 iv, p. 133 and vi, p. 455]. 



