466 



present in water-soluble sulphide form, and the maximum percentage 

 amount of each basic element with which sulphur is combined in this 

 form. 



No pest remedy containing nicotine as an ingredient, other than 

 registered stock dips, shall be sold unless the container shows the 

 minimum percentage amount of contained nicotine. 



Cyanide shall not be sold as a pest remedy unless the container shows 

 the total percentage of cyanogen contained in the cyanide, the forms 

 of combination in which cyanogen is present, and the minimum per- 

 centage of each form. 



For the purposes of these regulations the percentage of arsenic in 

 water-soluble condition in a pest remedy shall be as determined by 

 the amount present in solution after a sample of the preparation has 

 been digested for 24 hours at a temperature of 32° C. in a quantity of 

 water 500 times the water-free weight of the sample. 



Notwithstanding any provision to the contrary, pest remedies, 

 other than stock dips, may be sold if they have deteriorated through 

 exposure or other ways, if the container is marked " damaged." 



Persons contravening the regulations shall be fined not more than 



The prescribed tariff for the analysis of pest remedies referred to in 

 Section 24 of the Act shall be one guinea for a determination of any 

 constituent, with a maximum of fiv-e guineas per sample. 



Marshall (G. A. K.). On twelve new Species of Cureulionidae from 



South Africa. — Ann. S- Ma^. Nat. Hist., London, viii, no. 44, 

 August 1921, pp. 145-160. 



The species dealt with include Eremnus cerealis, sp. n., causing con- 

 siderable damage to wheat and oats in the Cape Province. 



Keys are given to the South African species of Microlarinus, Hochh., 

 and Hypsomus, Schh. 



HuTsoN (J. C). Scale Insects and Mites upon Tea. — Trop. Agric, 

 Peradeniya, Ivi, no. 6, June 1921, pp. 378-380. 



The following pests on tea were found on two inland estates in 

 Ceylon : Saissetia hemisphaerica (brown bug), S. oleae. Coccus viridis 

 (green bug), Tetranychus hioculatus (red spider), Eriophyes {Phytoptus) 

 carinatus (purple mite) and Tarsonenms translucens (yellow mite). 

 5. hemisphaerica was the most important pest ; 5. oleae is not usually 

 found on tea. 



The infested bushes were conspicuous owing to the presence of 

 sooty mould {Meliola sp.). This fungus is a marked feature of 

 an attack of 5. hemisphaerica or C viridis, but is only of secondary 

 importance. No parasitic Hymenoptera were present and only a few 

 Coccinellids. The greyish-white fungus {Cephalosporium lecanii) was 

 the chief parasite of the scales. 



Some larval forms of S. oleae were found on vigorous shoots in a 

 field where neither S. hemisphaerica nor C. viridis occurred, but they 

 had caused no appreciable damage. In one area the bushes, which 

 had been pruned the previous year and the prunings burnt, were 

 re-infested with C. viridis. The scales and mites often occurred 

 in slight hollows, wind-swept slopes, and in strips along the edges 



