33 



Dyar (H. G.). a new Subgenus of Culex, Linn. (Diptera, Culicidae). 



— Insecutor Insciiiae Menslruus, Washington, D.C., vii, no. 7-9, 



July-September 1919, p. 150. 

 Culex {Eubonnea, subg. n.) tapena, sp. n., is described from Para- 

 maribo, Surinam, where it was captured about 7 p.m. indoors. It 

 was also bred from a pupa found in a permanent pool with much 

 vegetation. 



RouBAUD (E.). Antagonisme du Betail et de THomme dans la 



Nutrition sanguine de V Anopheles maculipennis. Le Role 



antipaludique du Betail domestique. — Ball. Agric. Alger.-Tun.- 



Maroc, Algiers, Ser. 2, xxv, no. 11, November 1919, pp. 272-273. 



Observations made in France in the districts of the lower Loire and 



the marshes of the Vendee show that man is greatly protected from 



malaria by the presence of other animals, especially domestic animals. 



Man is only attacked by Anopheles maculipennis in the absence of 



other available food in the form of mammalian blood, for which 



distinct preference is shown in the following order : pigs, cattle, 



horses, goats and sheep, rabbits and dogs. 



DE Meza (J.). The Common Ticks of Nyasaland with some special 

 Notes on the Anatomy and Biology of Ticks in General. — 

 Nyasaland Prot. Dept. Agric., Zomba, Bull. 1, 1918, 32 pp., 

 13 figs. [Received 10th December 1919.] 

 The general biology, anatomy and classification of ticks are discussed* 

 A list of the species occurring in Nyasaland together with their respec- 

 tive life-histories and the usual remedial measures are given. This list 

 of 14 species includes the following known disease carriers : Argas 

 persicus, Ornithodorus tnoubata, Boophilus decoloratus, Haemaphysalis 

 leachi, Rhipicephalus appendiculatus, R. evertsi, R. simics, R. capensis, 

 Amhlyomma hebraeum and Hyalomma aegyptium. 



Bacot (A.) & Talbot (G.). The Survival Period of Lice and Nits 



{Pediculus humanus) when submerged in Tap Water and Water 



containing 1 per cent, of Salt at various Temperatures. — Brit. 



Med. Jl, London, no. 3074, 29th November 1919, p. 703. 



These experiments show that although active lice are killed by 



immersion in salt water, this method cannot be reUed upon for the 



cleansing of verminous textiles, even when they are allowed to soak for 



24 hours, unless the temperature of the water is above 90° F. The 



eggs apparently fail to hatch owing to the want of continued heat 



necessary for their incubation. Under these conditions, plain tap 



water has proved as effective as that containing salt. 



Bacot (A.) & Lloyd (L.). Experiments concerning the Destruction 



of Active Lice (Pediculus humanus) by Solutions of Cresol Soap 



Emulsion and Lysol, and of Lice and Nits with Kerosene, with 



a View to the Use of these Remedies for the Treatment of 



Verminous Heads. — Brit. Med. Jl., London, no. 3074, 29th 



November 1919, pp. 704-705. 



As shown in the previous paper the temperature of the solution 



used for the destruction of lice and their eggs is the most important 



(656) Wt. P1921/144. 1,500. 3.20. B.&F.Ltd. Gp.ll. a 



