134 



and shape as compared with that of haemorrhoidalis. I also still 

 believe that my tentative conclusions as to the method of oviposition 

 are extremely probable. As to the observations recorded, they are 

 not inaccurate in any sense." 



Cleare (L. D.). Mosquitoes : How they live, how they spread Disease, 

 and how to destroy them. — Jl. Brit. Guiana Bd. Agric, Georgetown, 

 xii, no. 1, January 1919, pp. 19-35, 8 figs. [Received 5th June 

 1919.] 



This popular paper, compiled largely from recent literature on the 

 subject, gives a general account of the commoner mosquitos, their 

 connection with disease and recommendations for their control. 

 Species of Culex, Anojjheles and Stegomyia are abundant in British 

 Guiana and two of the diseases carried by them, malaria and filaria, 

 are prevalent. No outbreak of yellow fever has occurred in the Colony 

 since 1885, though its transmitter, Stegomyia fasciata, is probably the 

 commonest mosquito in Georgetown and is important in view of the 

 possible re-introduction of the disease. Malaria was the cause of 

 1,436 deaths in the Colony in 1917, or 15"1 per cent, of all the deaths, 

 as well as a great deal of illness and loss of labour. While the number 

 of deaths caused by filariasis is not so large, some 13 to 15 per cent, of 

 the native population and about 25 per cent, of the primary school 

 children in Georgetown have been found to be suffering from it. 



D'Emmerez de Charmoy (D.). Poultry in Mauritius: Their Diseases, 

 Breeding and General Management. — Mauritius Dept. Agric, Port 

 Louis, Bull. no. 12, December 1918, pp. 26-28, 1 plate. [Received 

 10th June 1912.] 



The external parasites causing disease among poultry in Mauritius 

 include the mites, Sarcoptes mutans and Dermanyssus sp., and lice such 

 as Goniocotes abdominalis. An important pest of ducks is a large Acarid, 

 Hylothyrus coccinella, which lives in shady and moist places under 

 stones and vegetable refuse. A volatile substance with a very 

 penetrating ddour which acts on the nasal tissues exudes from it. 

 Contact of the insect with the mucus membrane of the mouth causes 

 violent imflammation, usually ending in death after a few hours, 

 and the rearing of ducks is impossible in localities where this Acarid 

 abounds. 



Yelu (H.). Trypanosomiase des Chevaux du Maroc. Gu§rison de la 

 Maladie exp6rimentale du Chien par I'Osarsan. [Trypanosomiasis 

 of Horses in Morocco. Experimental Cure of the Disease in Dogs 

 by Osarsan.]— 5mW. Soc. Path. Exot., Paris, xii, no. 5, 14th May 

 1919, 220-223. 



Experiments, which are described in detail, have led to the conclusion 

 that Trypanosoma marocanum is susceptible to a series of injections 

 of osarsan in strong doses. A dog can stand doses of 1/10 grams per 

 lUOO grams, repeated at 7 to 9 days' interval. Prolonged observation 

 alone will determine the value of this drug as producing a definite 

 cure. 



