449 



being quoted from previous authors. The remedial measures recom- 

 mended are fumigation with carbon bisulphide or hydrocyanic acid gas. 

 The Bruchids may also be destroyed by raising the temperature to 

 140° F. for two minutes or immersing infected beans in two parts of 

 boiling water to one part of cold for live minutes. This method does 

 not injure the seed. Infestation may be prevented by clean cultivation 

 and clean storage. 



ScHLUPP (W. F.). Cetonid Beetles. — Reprint from 5. African Fruit 

 Grower [sine loco], May 1922, 3 pp. [Received 4th July 1922.] 



Cetoniid beetles are very common in most parts of South Africa, 

 the two most destructive being Pachnoda impressa and P. cincta. 

 In orchards, ripe apricots and peaches are first attacked, and grapes 

 and plums also suffer ; pomaceous fruits are less severely damaged. 

 In gardens, rose petals are very much eaten. Breeding occurs in manure 

 heaps, in accumulations of vegetable matter and in soil rich in humus. 

 Eggs are deposited about an inch below the surface in January (under 

 laboratory conditions) and hatch in from 15-18 da\'s. The larvae 

 feed on vegetable matter for several weeks, and construct pupal cells 

 in June, where they remain until about the end of September before 

 pupating. After a pupal period of 25-28 days the adults remain 

 in the cells until late October or November. 



Spraying has given very poor results, and to be at all effective would 

 have to be applied only a short time before the fruit is gathered. 

 Covering the trees with mosquito or other netting is a good plan with 

 valuable trees, and poultry will devour many of the beetles, especially 

 if the trees are jarred at intervals. Hand collection is one of the most 

 efficient remedial measures, and is best done by jarring the beetles 

 into a net on the end of a pole. As the beetles always attack the ripest 

 fruit, a good deal of injury can be avoided by picking it while it is 

 slightly green. 



Northern Rhodesia : Government Notice No. 79 of 1932. — N. Rhodesia 

 Govt. Gaz., Livingstone, no. 177, 6th July 1922, p. 73. 



Under the above notice, dated 29th June 1922, Government Notice 

 No. 44 of 1922 is cancelled and the provisions of Government Notice 

 No. 34 of 1919 revived [R.A .E., A, x, 294]. Citrus trees or parts thereof 

 may not therefore be imported from any part of South Africa until 

 further notice. 



Hall (W. J.). The Hibiscus Mealy Bug, Pscudococcus hibisci (Hemip.). 

 Bull. Soc. Ent. d'Egypte, Cairo, xiv (1921), 1922, pp. 17-29. 



Phenacoccus hirsutus, Green (hibiscus mealybug) has recently been 

 the cause of much damage in Cairo, having doubtless been introduced 

 from India, where it is a well-known pest [R.A.E., A, ix, 74, 75]. It 

 was at first mistaken for a new species, for which the name Pseiidococcus 

 hibisci was proposed. Wind is undoubtedly the chief distributing 

 agent. It is almost a universal feeder, preferring old or damaged trees. 

 Its food-plants include Hibiscus, Mortis spp., Albizzia lebbek, Bauhinia 

 spp., Grevillea robusta, Zizyphiis spp., Ccratonia siliqua, Acacia arabica, 

 Cajanus indicus, etc. 



The stages of this mealybug are described. Eggs are laid within 

 an ovisac containing from 150-300 eggs, after completion of which 

 the female dies. The young larvae appear after an incubation period of 



