31 



(vesfimenti), Hacwafopintts suis and bed-bugs, an exposure of 

 5 min. being given. This gas also gave good results in the disinfection 

 of railway carriages. 



Leger (A.). Le Paludisme a Dakar en Milieu indigene.— Bull. Soc. 

 Med. Chir. Fran{'aise de I'Oiiest-Africain, i, June 1919, pp. 3-5. 

 (Abstract in Bull. Inst. Pasteur, Paris, xviii, no. 7, 15th April 1920 

 pp. 253-254.) 



Between 75 and 80 per cent, of the Anophelines captured in the 

 town of Dakar were Anopheles (Pyretophorus) cost alls. A. {Myzomyia) 

 fiinesfiis and A. [Cellia) pharoensis also occvu-red. 



Box^•E-^^'EPSTER (J.) & Bonne (C.) Een Plilebotomussoort in 

 Suriname, Plilebotomus squamipennis, Lutz & Neiva. \P. sqiiami- 

 pcnnis in Surinam.] — Geneesk. Tidschr. Ned. Indie, Balavia, lix 

 no. 5, 1919, pp. 676-679. 



No species of Phlehoiomns appears to have been previously recorded 

 from any of the Guianas. Female examples of P. squamipennis have 

 been taken in shady places in the virgin forests of the interior of 

 Dutch Guiana. 



Grabham (SI.). The House Ants of Jamaica as Carriers of Pathogenic 

 Micro-organisms. — Jamaica Public Health Bull. (1917), Kingston, 

 1918, pp. 29-34. 



Ants, especially in tropical countries where they are common 

 indoors, are potential carriers of infection by means of their feet, 

 excrement, and casts disgorged after feeding. In Jamaica the five 

 species chiefly concerned are Iridomyrmex humilis, Mayr, Prenolepis 

 longicornis, F., Solenopsis geminata, ¥., Monomoriuin destructor, 

 Jerd., Tapinoma melanocephahtm, F., and Camponotus hannani. 

 For. The usual measures for destroying the nests are referred to. 

 In describing the method of exploding carbon bisulphide vapour at 

 the mouth of a nest in order to drive the fumes inwards, it is pointed 

 out that after the explosion the vapour continues to burn with a 

 colourless flame, so that any attempt to pour in more carbon bisulphide 

 may have fatal results. The hole should be closed with earth 

 immediately after the explosion. Natural enemies play a ver}^ large 

 part in keeping ants in check. They include a predatory ant, Phcidolc 

 fallax, For., a ground lizard, Ameiva dorsalis, and some birds. 



Todd (J. L.). Tick-caused Paralysis. — Canad. Med. Assoc. J I., 

 Toronto, ix, no. 11, November 1919, pp. 994-996. 



Two cases of tick paralysis are described. One proved fatal, the tick 

 responsible being Haemaphysalis cinnabarina. 



Self-cleaning Canal Screen. — Engineering Neics Record, New York, 

 15th January 1920. (Abstract in Trop. Dis. Bull., London, xvi, 

 no. 4, 15th October 1920, pp. 255-256, 4 figs.) 



An arrangement for tlie removal of leaves and debris from small 

 channels and streams is described. This should pro\-e useful in minor 

 anti-malarial measures. 



