519 



genera most frequently associated with this type of damage are Atropos 

 and CaeciUus. The present paper records an unusual infestation of 

 CaeciUus pedicularius, which had established itself in the straw stored 

 in a factory where straw mattresses are made. The store-rooms were 

 thoroughly fumigated with rock sulphur placed in an iron receptacle 

 with hot cinders on the top. The treatment was given twice, 10 lb. 

 of sulphur being used on the first occasion and 15 lb. on the second, 

 each fumigation lasting 24 hours. The concrete floors were then 

 washed with carbolic soap, the walls whitewashed with a wash 

 containing some carbolic acid, and cracks in the floor in which some 

 immature Psocids had been observed were cemented. This treatment 

 proved entirely successful. In investigating the source of the outbreak 

 it was found that straw coming in to the factory from one farm was 

 dirty and in bad condition. This source of supply was stopped and 

 six months later the factory was still free from any recurrence of the 

 infestation. 



Green (E. E). A List of Coccidae affecting various Genera of Plants. 



Ann. App. Biol., London, iv, nos. 1 & 2, September 1917, 

 pp. 75-89. 



This paper, the contents of which are indicated by its title, consists 

 of the first part of a valuable list of Coccids and their food-plants, 

 compiled partly from existing publications and partly from the author's 

 own collections and observations extending over a period of several 

 years. 



Green (E. E.). Note on the Immunity of Chalcid Parasites to Hydro- 

 cyanic Acid Gas. — Ann. App. Biol., London, iv, nos. 1 & 2, 

 September 1917, p. 90. 



When several individuals of Lecanium were subjected to strong 

 fumes of hydrocyanic acid gas for a period of 18 hours for the purpose 

 of preservation, it was found that large numbers of living Chalcids 

 emerged from the bodies of the Coccids after their removal from the 

 killing bottle. This fact may have an important bearing upon the 

 treatment of scale-insects in the field, when they are known to be 

 infested by useful parasites, as it would appear to be possible to 

 fumigate scale-infested trees without affecting the emergence of the 

 Chalcids. 



Ritchie (A. H.). Pineapples. Visit of the Entomologist to Above 

 Rocks and District. — Jl. Jamaica Agric. Soc, Kingston, xxi, no. 7, 

 July 1917, pp. 264-265. 



Metamasius ritcliiei, Mshl. (pineapple weevil) has destroyed a large 

 percentage of pineapple plants and fruits, owing principally to 

 the failure of the growers to carry out the control measures that had 

 been recommended. These should consist of clearing out and slashing 

 up infested fruits and plants, w^hich, when thus treated, quickly 

 dry up and prevent the development of the larvae contained in them. 

 Instead of this, many infested plants have been dug up and left in the 

 fields in heaps, thus enabling the immature stages to complete their 

 life-cycle. Plants under poor conditions of growth are naturally the 



