92 



Rubber was attacked on one estate by Aspidiotus cycmophylli, 

 a scale which also injures bananas, guavas and palms. This insect 

 should be sprayed, as soon as observed, with lime-sulphur, kerosene 

 emulsion or red oil. The bark of young trees was occasionally damaged 

 by crickets. These can be destroyed by poisoned baits prepared 

 according to the following formulae : — (1) 25 to 40 lb. bran or pollard, 

 1 lb. Paris green, molasses and water to form a thick mash ; (2) finely 

 chopped grass, 1 lb. sodium arsenite, 7 lb. molasses, 12 gals, water. 



Pineapples were injured by a small species of rhinoceros beetle 

 and by an unidentified mealy-bug. The latter was destroyed by 

 fumigation before export. Crickets were reported on Agave rigida var. 

 sisalana (sisal) in a newly-planted area, where shelter was afforded by 

 a dense crop of weeds. Among ornamental plants, an Oreodoxa regalis 

 (royal palm), which had died of " bud-rot," was found to harbour 

 Dipterous larvae and earwigs. In addition to the Coccids found on 

 bananas, Aspidiotus hartii on yams and Chionaspis citri on oranges 

 are recorded. 



The importation of vegetable matter from certain prescribed 

 countries is forbidden by Proclamation no. 24 of 1913, to prevent the 

 introduction of Oryctes rhinoceros (rhinoceros beetle), except in certain 

 instances where special permission has been obtained and the stock 

 inspected and fumigated. 



Freeman (W. G.)- Report on Locusts in Venezuela. — Bxll. Dept. Agric, 

 Trinidad arid Tobago, Port of Spain, xiv, no. 6, 1915, pp. 191-194, 

 5 plates. 



The locust found in Venezuela at the end of May 1915 was Schistocerca 

 faranensis, and was identical with that occurring in Ciudad Bolivar 

 in January 1915. Cassia occidentalis (negro coffee) was apparently a 

 favourite food-plant. A plot of bananas and scattered Erythrina umbrosa 

 (immortel trees) were completely defoliated ; a coconut plantation 

 was also badly attacked, while in an adjoining garden young beans 

 were destroyed, though tomatoes were almost untouched. Cacao was 

 injured to a very slight degree. Acrocomia sclerocarpa (gru-gru palm) 

 and Oreodoxa oleracea (cabbage palm) were slightly attacked. The 

 locusts were most active in the afternoon and their general direction 

 was easterly or north-easterly towards Trinidad. The sea and contrary 

 winds, however, have up to the present proved effective obstacles 

 against an invasion of Trinidad. Nevertheless, should the present 

 swarm be succeeded by a larger generation, the hkelihood of an 

 invasion of Trinidad will be greatly increased. 



Urich (F. W.). Notes on the South American migratory Locust 



{Schistocerca paranensis, Burm.), Bull. Dept. Agric, Trinidad 

 and Tobago, Port of Spain, xiv, no. 6, 1915, pp. 194-197. 



The habits of Schistocerca paranensis, Burm., were studied at Guiria, 

 Venezuela, during August 1915. The swarms were small and isolated, 

 consisting of hoppers in the last instar, and it was estimated that 

 adults would appear during the first half of September. The hoppers 

 were very active in the sunshine, and at night congregated on the tops 

 of low-growing shrubs and trees. The rate of advance in search of 



