90 



potato. The owner of one of the potato fields, however, applied 

 green arsenoid, at the rate of 1 pound to 50 gallons water, and nearly 

 ruined the potato vines. 



Arsenate of lead has given the best results, with no injury to the 

 foliage, while Paris green and green arsenoid give each about the 

 same results, both being inferior to the arsenate of lead. 



Experiments mth whale-oil soap, Owens Standard brand, 1 pound 

 to 2 gallons of water, had no effect on either larv» or adult Doryphora. 

 The same brand of soap was applied against Diabrotica vittata, at a 

 strength of 1 pound of soap to 1, 2, 4, and 8 gallons of water. A mix- 

 ture of 1 pound to 2 gallons of water, or weaker, did not prove suc- 

 cessful as a repellant, while 1 pound to each gallon of water kept the 

 beetles away, but seriously injured the cucumber plants to which the 

 mixture was applied. One pound of this soap to 8 gallons of water 

 was ineffective against Aphis on cherrj^, but the same strength com- 

 pletely repelled the three-lined plant-bug from chrj^santhemums so 

 that the plants were not again attacked by this insect. 



Tobacco dust was ineffective against Dorypliora 10-Uneata, Phyllo- 

 treta vittata, and Diabrotica vittata. 



FRTJIT SERIOUSLY INJURED BY MOTHS. 



By C. W. Mally, Cape Town, South Africa. 



During May, 1900, numerous letters were received complaining of 

 serious injury to fruit bj^ moths, specimens of which were submitted 

 to Mr. L. Peringuey, assistant curator South African Museum, who 

 determined them as Ophiuza lienardi. 



With the exception of one specimen, this is the only species rep- 

 resented in the material received from the fruit growers. A summarj^ 

 of the correspondence has been given in the Agricultural Journal for 

 July 5, 1900. 



The moths were apparently most injurious in the East London dis- 

 trict, serious complaints coming from East London, Komgha, Fort 

 Jackson, Kentbury, and as far inland as Grahamstown. 



It frequenth^ occurs that a number of moths cluster on a single 

 fruit, and some of the reports indicate that there was scarcel}' a fruit 

 that was not covered with moths. One correspondent reports the 

 moths as swarming on a load of pineapples that were being taken to 

 market. So^ne idea of the seriousness of the injury may be gathered 

 from the statement of Mr. Walter A. Edmonds, Komgha, that "20,000 

 extra fine oranges, on all of which, except those picked half green, 

 directly the moths appeared, have been spoiled." Tlius far injury to 

 the following fruits has been reported: Apples, pears, plums, grapes, 

 peaches, figs, oranges, guavas, bananas, pineapples, loquats, and 

 medlars; also "native fruits, berries, and flowers." 



The fruit growers agree as to thejmportance of the pest; but their 

 observations on the habits of the adult are considerably at variance. 



