. 58 



commonly infesting a species of Lorantlnis, probably /-. javanicus, a 

 plant parasitic on cacao, as well as cacao itself, and less frequently 

 coconut palms. Its numbers arc greatly reduced by the fungus 

 Microcera coccophila. Aspidiotus palmae is especially abundant on 

 avocado. Coconuts are also attacked by A. articulatns, an unidentified 

 species of Lecanium, and Ischnaspis longirostris {filiformis). 



DE Seahk.v (A. 1'.). Etudes sur les Maladies et les Parasites du Cacaoyer 

 et d'autres Plantes eultiv6es a S. Thom6. xxvi. VAraecerus 

 fasciculatus a S. Thom6. — Lisbon, Campanhia Agricola Ultra- 

 marina, 1920, 4 pp. [Received 11th December 1920.] 



Araccerus fasciculahis, altliough introduced in the larval stage 

 among cacao berries or dried branches of coffee, has not yet become 

 established in San Thome. To prevent injury the suggestions made by 

 Maync R.A.E., A, vi, 79] are advocated ; these include clean storage 

 and the removal of infested fruits from the trees. Dried berries should 

 not be stored for very long. 



No parasites of this beetle have yet been discovered in San Thome. 



DE Se.^br.\ (A. F.). Etudes sur les Maladies et les Parasites du Cacaoyer 

 et d'autres Plantes cultivees a S. Thome, xxvii. Note sur 

 I'Importanee agricole de V Anlacasph pentagona a S. Thome. — 

 Lisbon, Campanhia Agricola Ultramarina, 1920, 4 pp. ^Rccei\-ed 

 nth December 1920.] 



The natural enemies of Pscudaonidia Irilobiiiformis and Atdacaspis 

 pentagona in San Thome include the fungus Microcera coccophila. The 

 importance of fungous diseases in the control of scale-insects and their 

 value to agriculture is emphasised [R.A.E., A, viii, 492]. 



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

 et d'autres Plantes cultivees a S. Thome, xxviii. Note sur I'Habitat 



de VAspidiotits articulatns a S. Thome. — Lisbon, Companhia 

 Agricola Ultramarina, 1920, 4 pp. 'Received 11th December 

 1920. J 



In San Thome Aspidiotns ariiciilatiis has been found infesting cacao, 

 coffee, coconut, avocado and even Citrus, but it has never been 

 sufficiently abundant to be of any economic importance. The favourite 

 food-plant is apparently Lonchocarpiis sp. 



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

 et d'autres Plantes cultivees a S. Thom6. xxx. Encore le Thrips 

 du Cacaoyer [HcHothrips ritbrocinctus, Giard) a S. Thom6. — ■ 



Lisbon, Companhia Agricola Ultramarina, 1920, 5 pp. [Received 

 11th December 1920.1 



The food-plants of Heliothrips rnbrocinctus, Giard, include Claoxylon 

 molleri, Copaifera mopane, Manihot ittilissima, Pseudospondias micro- 

 carpa, Psidinm pomiferum and Urophyllum insulare. It also attacks 

 mango and kola plants. Owing to the habits of H. rnbrocinctus, it is 

 doubtful whether tobacco would be of any use as a trap crop [R.A.E., 

 A, viii, 492]. Apparently this thrips does not fly very much, and only 

 accidentally alights on tobacco plants when carried by the wind. 

 As a pest of cacao in San Thome, it is probably not as important as it 

 at first appeared to be, but its further spread should be guarded against. 



