12 



Beal (W. r.). Annual Report for i9U.— London, 1915, 18 pp., 

 3 plates, 9 tables, 1 map. [Received 2ud November 1915.] 



Glossina sp., Tabanus taeniola, T. biguUatus, and a number of un- 

 determined Tabanidae were captured during the year. An epidemic 

 of verminous enteritis occurred among sheep brought from Senegal. 

 The worms found in the stomach were Spiroptera microstoma or 

 macrostoma {Habronema muscae) and are transmitted by the house-fly. 

 The embryos of the worm pass out with the faeces and then enter the 

 bodies of fly larvae which have hatched from eggs deposited on the 

 dung or moist litter. The young worm reaches its final stage of 

 development about the time the adult fly emerges. The worm 

 passes out of the fly on to the horse when the former settles on 

 the muzzle or the body, is licked in by the horse and passes into 

 the stomach. It lives on the mucous membrane and also burrows 

 channels in it. 



Seidelin (H.). Distribution and Prevalence [of Yellow Fever].— 



Yelloiv Fev. Bur. Bull., Liverpool, ill, no. 4, August 1915, 

 pp. 259-260. [Received 12th November 1915.] 



The number of yellow fever cases reported during the years 1913 

 and 1914 show a marked decrease. During the past four years, the 

 only large epidemic outbreak occurred in Tocopilla, Chile, in 1912. 

 No endemic focus of any importance has been eradicated during the 

 years of observation, except possibly in Northern Brazil. Renewed 

 investigations tend to confirm Sir Rubert Boyce's contention that a 

 widespread endemic prevalence of yellow fever is present in West 

 Africa, and it is probable that similar investigations in other yellow 

 fever countries will lead to similar results. 



Seidelin (H.). Town Planning in the Tropics with special Regard to 

 the Prevention of Yellow Fewer.— Yellow Fev. Bur. Bull., Liverpool, 

 iii, no. 4, August 1915, pp. 260-266. [Received 12th November 

 1915.] 



An efficient prophylaxis against yellow fever consists in a complete 

 extermination of the transmitting mosquitos. As long as there is any 

 doubt as to whether one or several species, in additioi to Stegomyia 

 fasciata, are able to act as transmitters, it is advisable to destroy all 

 mosquitos. These, in the first instance, should be prevented from 

 gaining access to quarters inhabited by non-immunes. The simplest 

 method is the screening of such quarters. The problem of the segre- 

 gation of a European settlement in connection with a native town is 

 discussed, and the British and Spanish methods of town-planning 

 shortly described. 



Herrick (CI. W.). Some external Parasites of Poultry, with special 

 Reference to Mallophaga, with Directions for their Control.— 



Cornell Univ. Agric. Expt. Sta., Ithaca, N. Y., Bull. 359, April 

 1915, pp. 233-268, figs. 95-116. [Received 18th November 1915.] 



The presence of lice on domestic fowls causes an irritation which 

 eventually weakens the host and gives opportunity for further diseases 



