491 



Sanders (G. E.). Spraying and Busting.— 56th Ann. Rep. Nova 

 Scotia Fruit Growers' Assoc., Kingston, 1920, pp. 114-127. 



This paper emphasises the economic importance of spraying, the 

 profits from which are even greater now that higher prices are being 

 paid for fruit. Spraying materials and dusts and a spray- calendar, 

 all as adapted to conditions in Nova Scotia, are noticed, the question 

 of Unie-sulphur injury and the comparative merits of spraying and 

 dusting being considered in detail. 



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

 et d'autres Plantes cultiv6es a S. Thome, vii. Quelques Observations 

 sur le " Thrips " du Cacaoyer.— Lisbon, Compagnie " Agricola 

 Ultramarina," 1919, 23 pp., 7 figs. [Received 21st September 1920.] 



Heliothrips nihrocinctus, Giard, attacks both cacao and avocado 

 in_ the island of S. Thome. The various stages are described. As the 

 chmatic conditions and the vegetation of the island are very favourable 

 to this pest, the necessity for preventing its spread by the apphcation 

 of artificial remedial measures is emphasised. These include thorough- 

 ness in cultivation and the burning of infested leaves and branches. 

 The resistance of the plant may be increased by watering during the 

 dry season. 



A Coccinelhd, ExocJwnms flavipes, Thunb., has been found associated 

 with H. rubrocinctus, and is probably predaceous on it. 



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

 Cacaoyer et d'autres Plantes cultivees a S. Thom6. viii. Sur une 

 nouvelle Espece du Genre Mirotermes appartenant a la Faune de 

 S. Thom6. — Lisbon, Compagnie " Agricola Ultramarina," 1919, 

 6 pp., 8 figs. [Received 21st September 1920.] 



Mirotermes amamlii, sp. n., here described from San Thome, is 

 apparently the first representative of this genus of termites recorded 

 from the island. 



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

 Cacaoyer et d'autres Plantes cultivees a S. Thome, ix. Les Cochenilles 

 du Cafeier — Lisbon, Compagnie "Agricola Ultramarina," 1919, 

 8 pp., 9 figs. [Received 21st September 1920.] 



The Coccids here recorded as occurring on coft'ee plants on the Island 

 have been noticed elsewhere [R.A.E., A, \\, 383]. The species there 

 referred to as Ceroplastes sp. is probably C. ceriferus, Anders. 



Santschi (F.). Etudes sur les Maladies et les Parasites du Cacoyer et 

 d'autres Plantes cultivees a S. Thome, x. Fourmis de S. Thome. 



Lisbon, Compagnie " Agricola Ultramarina," 1919, 4 pp. [Received 

 21st September 1920.] 



The ants recorded as occurring on the Island include Pheidole 

 megacephala, F., Monomorium ■ pharaonis, L., Prenolepis longicornis, 

 Latr., and Camponotus maculatus, F., var. thomensis, n. 



