199 



an undetermined weevil in maize-fodder. From China : Lepidopterous 

 larvae in dried fruit and weevils in sweet potatoes. From Hawaii : 

 Coccus longulus on betel leaves ; Diaspis bromeliae and Pseudococcus 

 bromeliae on pineapples ; larvae of Ceratitis capitata in coffee berries. 

 From Holland : Merodon equestris in bulbs. From Japan : Lepi- 

 dopterous larvae in dry bulbs. From Oregon : larvae of Anarsia 

 lineatella in peaches. From Pennsylvania : undetermined Aphids on 

 Hibiscus. From Florida : Aspidiotus camelliae on avocado pear. 

 From Idaho : Leptinotarsa decemlineata and Hypera variabilis (postica) 

 in potato cars, Cydia pomonella on apples, and Aleurodes spp. on 

 Chimaphila menziesii. From Iowa : Aegeria (Sesia) rutilans in 

 strawberry plants. From Mexico : Calandra oryzae in maize ; Sais- 

 setia oleae and Coccus- hesperidum on citrus foliage ; Bruchus obtectus 

 in beans ; Chrysoniphalus aurantii on sweet limes ; Lepidosaphes 

 beckii on oranges. From New Mexico : Cydia pomonella on apples. 

 From Manila : egg-clusters of Pseudococcus on a pot-plant. From 

 Michigan : Lepidosaphes ulmi and larvae of C. pomonella on apples. 

 From Missouri : Aspidiotus perniciosus on plum trees. From New 

 York : Pseudococcus and Aleurodes spp. on Gardenia. From New 

 Jersey : Aspidiotus spp. on orchids. From Nicaragua : undetermined 

 weevils in wild cotton-bolls. From Panama : Phomopsis citri on 

 grapefruit. From Texas : Cylas formicarius in yams. From Virginia : 

 Balaninus caryatrypes in chestnuts. From Tahiti : Euscepes batatae 

 and larvae of undetermined weevils in sweet potatoes. From Washing- 

 ton : Aspidiotus perniciosus, eggs of undetermined Tetranychids, 

 Lepidosaphes ulmi and Eulecanium (Lecanium) corni on apples. 



Vayssiere (P.). Sur les Champignons Parasites des Insectes. [Con- 

 cerning the Fungous Parasites of Insects.] — Bull. Soc. Nat. 

 Acclimat., Paris, Ixvi, no. 2, February 1919, pp. 33-37. 

 The various attempts that have been made to control insect pests 

 by means of disseminating fungus spores among them, and the results 

 that have been obtained from these experiments, are briefly reviewed. 

 The examples quoted indicate that the problem is by no means solved. 

 It is not sufficient to disseminate a fungus in order to produce an 

 epizootic, since conditions must also be favourable for its development. 

 There is, moreover, a certain stage in the development of the insect 

 when it is most susceptible to infection ; at others it is able to offer 

 complete resistance to the attacks of disease. Various fungi have 

 different methods of infection : some penetrate the integument of the 

 insect, some the digestive tract and sqme the respiratory system. 

 Any fungus epidemic is almost entirely dependent upon weather 

 conditions ; as a rule, damp, cool weather is essential for the produc- 

 tion of an epidemic and no dissemination of spores during a dry, 

 warm season would give any success. The question requires further 

 study in all its aspects. 



French, Junr. (C). The Rutherglen Bug {Nysius vinitor). A 



Destructive Pest to Potatoes, Tomatoes, Grapes, Peaches, etc. — 



Jl. Dept. Agric. Victoria, Melbourne, xvi, no, 12, 10th December, 



1918, pp. 738-740, 5 figs. [Received 5th March, 1919.] 



Nysius vinitor (Rutherglen bug) is considered one of the worst 



pests of fruit and vegetables, the greatest damage being done during 



