618 



•occur. The number of puparia parasitised in the summer months 

 is much higher than in those collected in winter and spring. Of the 

 total number of puparia examined, 10-9 per cent, were parasitised by 

 A. hilineata and A. nitida, while a certain number of both larvae and 

 puparia were destroyed by the adult. The Staphylinids therefore are 

 important in checking the increase in numbers of C brassicae. About 

 10 per cent, of the puparia examined were parasitised by Hymenoptera. 

 Increase in the number of parasites in badly infested areas would 

 probably give good results. 



Farming Calendar. — Rhodesia Agric. Jl, Salisbury, xii, no. 3, June 

 1915, pp. 397-400. 



The cabbage louse [Aphis brassicae], and the bagrada bug [Bar/rada 

 ■hilaris] attack plants of the cabbage family during June. Onion 

 thrips [Thrips tabaci] during June and July can be controlled by 

 dipping the transplanted seedlings as far as the roots in tobacco wash 

 or paraffin emulsion. The winter crop of the fig can be protected from 

 fig weevil [Oniophorvs stomachosus] by the destruction of infested fruit 

 during June. Deciduous fruits infested with scale-insects should 

 receive a winter wash of lime-sulphur during July. The citrus codling 

 moth [Argyroploce leucotreta'] infests guavas when no citrus fruit is 

 available. All guava trees in the vicinity of citrus orchards should 

 therefore be stripped during July or August and the fruit buried 

 deeply or burned. 



Urich (F. W.). Locusts and Methods of destroying them. — Bd. Agric, 

 Trinidad and Tobago, Port -of- Spain, Circ. no. 13, 31st May 

 1915, 6 pp. 



Locusts which may migrate to Trinidad from Venezuela may be 

 expected to be the South American migratory species. Large swarms 

 were reported to have invaded Ciudad Bolivar about the middle of 

 January and were flying in a north- easterly direction. At that time, 

 it was stated by the author that as long as the swarm did not reach 

 the Gulf States of Venezuela, an invasion of Trinidad was not likely 

 to take place. In 1885, the first places in Trinidad to be invaded were 

 Chacacljacare, Monos and Chag:iiaramas. Methods of destruction by 

 lead arsenate and sodium arsenite sprays and by poisoned bran mash 

 are given. The mycologist's report for the month of April gives the 

 species as Schistocerca paranensis, a very destructive species in South 

 America. 



Sherman (F.). San Jos6 Scale ; Orchard Spraying and Orchard Protec- 

 tion. — North Carolina Dept. Agric, Raleigh, Bull. no. 209, June 

 1915, 67 pp., 10 figs. 



The life-history of Aspidioius perniciosiis (San Jose scale) in North 

 Carolina is as follows. Breeding Ijegins at Raleigh from March to May. 

 Maturity is reached in from 30 to 40 days. There are probably from 

 5 to 8 generations a year, the period of most rapid increase being 

 Augast and September. The winter is passed in the immature stage. 

 A. jjerniciosus is able to breed in any part of the State, since it has 

 been recorded at sea-level in Brunswick countv in the south-eastern 



