113 



or oval, flagellate forms, and also small leishmaniform parasites. The 

 flagellates were found in great numbers in the alimentary tract, and 

 occasionally in the salivary glands and proboscis ; in the latter, 

 however, small elongated parasites without a flagehum were more 

 common. The larvae examined were not infected. Cultures of the 

 parasite were easily made in Noller's medium. A white mouse 

 inoculated with a large number of the parasites (flagellated or other- 

 wise) taken from the digestiAX tract of the insect showed a few round 

 leishmanifomi parasites in blood smears 4, 8, 13 and 18 days later. 

 By the 24th day it had to be killed, and a few free leishmaniform 

 parasites were found post-mortem. 



A few round and oval leishmaniform parasites were also found in 

 the leaves and skin of the fruit of the plant. On the bark partly 

 dried excrement of the insects was found to contain numerous leish- 

 maniform parasites, and it is thought probable that in the case of 

 plants with thinner bark, such as Euphorbia, these might easily 

 penetrate the tissues and multiply in the plant. 



SwELLENGREBEL (N. H.). Fi^Quence saisonniere des Anopheles 

 impalud^s aux environs d'Amsterdam. — Bull. Soc. Path. Exot., 

 Paris, XV, no. 2, 8th February 1922, pp. 116-119. 



The investigations with regard to the autumnal infection of 

 Anopheles maculipennis with Plasmodium vivax, carried out in 1920 

 [R.A.E., B, X, 20], have been continued in 1921, and the findings of 

 both years are now given in a series of tables. The present observa- 

 tions substantiate those already noticed [loc. cit.}. There is no evidence 

 that the salivary infection observed in the autumn is continued to 

 any extent after the diminution of the infection in the intestine. 

 Although there is no reason to suppose a hibernation of sporozoites 

 from January to May, studies along these lines are to be carried out 

 during those months in 1922, when it is also hoped to ascertain whether 

 the recrudescence of intestinal infection during February-April is due 

 to reinfection during those months or not. 



SwELLENGREBEL (N. H.). Myzomyia ludlowi, Theob., parvient-elle a 

 ressembler a Myzomyia rossii, Giles, quand elle vit en rapport 

 intime avec cette derniere espece ? — Bull. Soc. Path Exot., Paris, 

 XV, no. 2, 8th February 1922, pp. 120-122. 



Although it would seem possible that Anopheles {Myzomyia) ludlowi 

 and A. suhpictus {Myzomyia rossi) are only modifications of one 

 species, this is improbable since A. hidlowi may occur independently 

 of A. suhpictus, as, for instance, in Sumatra, where the latter is absent. 

 In Java both species occur. 



JojoT (C). Le Secteur de Prophylaxie de la Maladie du Sommeil du 

 Haut-Nyong (Cameroun). — Ann. Med. & Pharm. Colon., Paris, 

 xix, no. 4, October-December 1921, pp. 423-442, 1 map, 1 fig. 

 [Received 15th March 1922.] 



The prophylactic measures undertaken against sleeping sickness in 

 Haut-Nyong (Kamerun) are described, as well as the topography, 

 fauna and flora of the district. The numerous ticks and biting insects 

 that occur include Ixodes rasus ; Hippohosca maculata ; Glossina 

 palpalis and G. fusca ; the Tabanids, Tabanus latus, T. congolensis, 

 Chrysops stigmaticalis and C. dimidiatus ; the Simuliid, Simulium 



