300 



DE Seabra (A. F.) . Etudes sur les Maladies et les Parasites du Cacaoyer 

 et d'autres Plantes cultiv6es a S. Thome, xxii. Le Cosmopolites 

 sordidus, Germ., a S. Thome. — Lisbon, Companhia Agricola 

 Ultramarina, 1920, pp. 3-7, 3 figs. [Received 4th April 1922.] 



An account is given of Cosmopolites sordidus, Germ, (banana borer) 

 as occurring in San Thome, where it has been known as a pest since 

 1907. Other insects infesting bananas in the Island are the weevil, 

 Temnoschoita quadripusttdata {Sphenophorus quadrimaculatus), and 

 Dactvlosternum prof^mdus, a Hydrophilid beetle that appears to be 

 attracted by the decomposing tissues of the plant. 



As Doengas das Plantagoes de Cacau das Ilhas de S. Tome e Principe. 



[The Diseases and Pests of the Cacao Plantations in the Islands 

 of S. Thome and Principe.] — Lisbon, Companhia Agricola Ultra- 

 marina, 1921, 142 pp., 30 plates. [Received 4th April 1922.] 



This is a comprehensive review of the diseases and insect and other 

 enemies of cacao in San Thome and Principe. It contains a list of 163 

 insects, both noxious and beneficial, found on the estates of the 

 Companhia Agricola Ultramarina [R.A.E., A, viii, 491-493; ix, 

 57-58]. A number of others are being studied. 



Un Nemico delle Talee inestate nel Vivaio. [An Enemy of Grafted 

 Vine Slips in the Nursery.] — Boll, di Trento. (Abstract in Riv. 

 Agric., Parma, xxvii, no. 13, 31st March 1922, pp. 196-197.) 



Nurseries of grafted vine shps in the Trentino region have suffered 

 more or less severe losses due to the Tenebrionid beetle, Helops lanipes, 

 the larva of which lives in the ground for two years. It feeds on the 

 leaves and on the buds, and may cause losses of 70-75 per cent. In 

 France naphthaline is sprinkled along the rows and well mixed with 

 the soil. Carbon bisulphide may be injected in the plots during the 

 period when they are empty. 



Barreto (B. T.). Insects Injurious to the Sugar Cane in Cuba. — 



Rev. Agric, Comm. y Trabajo, Havana, iii, no. 10, 1920, pp. 371- 

 374, 5 figs. (Abstract in Internat. Rev. Sci. & Pract. Agric, 

 Rome, xh, no. 7, Julv 1921, pp. 927-928.) [Received 4th April 

 1922.] 



On one estate practically all the cane-fields were infested with 

 Pseiidococcus sacchari and P. calceolariae, but only 15-20 per cent, 

 of the canes had been attacked, the chief injury being done to those 

 planted to fill up gaps. In this case the Coccids were probably present 

 on the canes before planting. The most efficient remedy is to burn 

 the field and plough it up, but this should only be resorted to in 

 extreme cases. It is necessary to wait at least two months before 

 replanting. In some of the affected fields the eggs and larvae of 

 Scarabaeid beetles were abundant. The larvae can be exposed by 

 working the ground and may be collected or left to birds. The adults 

 should be shaken from fruit trees, on the fohage of which they 

 live, on to sheets, or the leaves may be sprayed with lead arsenate. 

 Light-traps are also useful against the adults. 



