48 



possible, either to give np the struggle or to adopt vast and far- 

 reaching measures ol which the ultimate success remains doubtful. 

 These views applied to human sleeping-sickness so long as it wa& 

 regarded as the same disease. If however it is to be considered 

 distinct, all that seems required is the application against T. rhode- 

 siense of the comparatively simple measures that have been suggested 

 against T. gambiense. All foci of infection must be mapped, cases 

 must be isolated, and traffic in and out of infected or suspected 

 centres must be watched or even suspended. Much cannot be expected 

 from treatment of the disease, as T. rkodesiense shows a great resistance 

 to dn gs in many cases. 



Of the highest importance is the vexed question as to the part 

 played by game and domestic animals in carrying infection. T. rhode- 

 sieiise is pathogenic to all domestic animals. According to Kinghorn 

 and Yorke up to 16 per cent, of the game of the Luangwa Valley 

 harboi r this tryp^nosome. Exception is taken to this statement, 

 which is said to be quite unfounded and apt to engender false or 

 exaggerated ideas, but the authors consider that game may in certain 

 circL mstan 'es act as a carrier of T. rkodesiense. All-round destruction 

 of game is however unnecessary and impracticable. The British 

 Inter- L'epartmental Committee's recommendation for the limited 

 destruction of game is quoted with approval. The ideal would be 

 the radical extermination of Glossina mors-itans, and while this is 

 impossible throi ghout the areas infested with this fly, it can be done 

 in sleeping-sickness areas. As time goes by the fly will be gradually 

 pushed back as more land comes under cultivation. 



MacGregor (M. E.). a new Mosquito of the Genus OrtJiopodomyia 

 from a Beech Tree-Hole in England. — JI. R.A.M.C., Loudon, 

 xxxiii, no. 6, December 1919, pp. 451-454, 1 plate, 1 fig. 



Ofthopodomyia albionensis, sp. n., is described from larvae collected 

 from a hole in a beech tree in Epping Forest, and is the only species 

 of this genus yet recorded from England. 



MacGregor (M. E.). A Method of preventing the Stranding of Mos- 

 quito Ova while hatching. — Jl. R.A.M.C., London, xxxiii, no. 6, 

 December 1919, p. 493, 1 fig. 



A method of constructing and applying cork harbours to prevent 

 the stranding of mosquito ova while hatching under artificial conditions 

 is described and illustrated. 



Edwards (F. W.). Mosquito Notes. — Bull. Enlom. Research, London, 

 X, no. 2, January 1920, pp. 129-137, 1 fig. 



The new mosquitos here described include — Ochlerotatus antipodeus, 

 from New Zealand ; 0. lepidonoti'S, from Macedonia, resembling in 

 some respects 0. msiicus, Rossi, which was taken at the same time 

 and place ; 0. {Finkiya) echinv.s from Macedonia, Morocco and Algeria, 

 thoi gh the Moroccan and Algerian specimens are somewhat doubtfuUy 

 conspe( ific with the type ; the characters differentiating this species 

 from 0. genichlati's, 01., are described ; the larval forms are also 

 very different ; Culex watti, from the Gold Coast and East Africa, 



