34 



the bites of these parasites on the skin is usually slight, though if 

 they are crushed while feeding the effects may be quite severe. In 

 experimenting with lice as regards their power of wandering from one 

 person to another, it was fomid that individuals placed on either 

 smooth or rough surfaces at greater distances than from 15 to 18 

 inches from the skin wandered about aimlessly. It does not appear, 

 therefore, to be necessary to take such precautions as standing the 

 bed of a patient in pans of water, as would be done in controlling 

 ants, though the rapidity with which a louse, when not actually 

 feeding, will attach itself to any fragment of clothing is noted as 

 being a very probable means of dissemination of typhus infection 

 among doctors. 



The methods of control employed should be as simple as possible, 

 and the apparatus used should also be simple, so that each division 

 of the army, and even each company, or at least each battalion, 

 may possess it. Where districts are better provided with apparatus 

 for disinfection the use of hot air (159° F.), or Rubner's method, 

 is the simplest. This latter method consists in placing the 

 clothing and bedding in the disinfection chamber, using formal- 

 dehyde 12 per cent., and water vapour at 140° F, in vacuo. The 

 preliminary heating lasts 20 minutes, the temperature is then 

 maintained at 140°-144° F. for three-quarters of an hour. Dis- 

 infection by this method is always complete in two hours. Other 

 methods are described, and the experiments made with them are 

 tabulated. Sulphurous anhydride is not recommended o^\ang to the 

 uncertainty of its action and the bleaching effect it has on equipment 

 [see this Review, Ser. B, iii, p. 203]. For treating the body various 

 substances are suggested, of which acetic acid, creolin and anisol are 

 among those recommended. 



Parker (R. R.), New Species of New England Sarcophagidae. — Cana- 

 dian Entomologist, London, Ont., xlviii, nos. 10 & 11, October & 

 November 1916, pp. 359-364 & 422-427. 



Sarcophaga bullata, sp. n., and S. scoparia nearctica, subsp. n., 

 which breed in carrion, manure and refuse, are here described. 



Dunn (L. H.). A Simple Method of Identifying the Anopheles Mosqui- 

 toes of the Canal Zone (Dip.) — Entom. News, Philadelphia, xxviii, 

 no. 1, January 1917, pp. 14-19. 



A key is given to the common species of Anopheles found in 

 the Panama Canal Zone. These include A. pseiidopunctipemiis, 

 A. eiseni, A. argyrotarsis, A. apicimacula, A. malefactor, A. albimanus, 

 and A. tarsimuculatus. 



Cockle (J. W.). Notes on the Wood-Tick {Dermacentor venustus.) — 

 Proc. B. C. Entom. Soc, Victoria, 1916, Entom. Series, no. 9, 

 August 1916, pp. 53-56. [Received 3rd January 1917.] 



The paper describes various observations on this tick in British 

 Columbia, but does not appear to contain any new information on 

 the subject. 



