141 



days' drought and produces an abundance of Anophelines. These 

 breeding-places were examined during a lull in the rains when the water 

 had somewhat subsided, and many larvae and nymphs were reared 

 to the adult stage in the laboratory ; these all proved to be Anopheles 

 funestus, Giles. It is evident in these circumstances that the natives 

 are surrounded with malarial conditions from their infancy, and, in 

 fact, many infants die from pernicious attacks or from malarial 

 cachexia aggravated by intestinal parasitism. The natives do not 

 apparently trace any connection between the splenic enlargement of 

 infancy and the attacks of malaria that supervene in later life, and 

 very seldom have recourse to European medicine. It is not surprising 

 that Europeans living among this malarial native population should 

 become infected, or that the percentage of cases should be high. 

 These facts confirm the importance of prophylactic measures to protect 

 as far as possible the health of the Europeans in the occupied 

 territory. 



Langeron (M.). La Larve d'Ano2)heles chaudoyei (Theobald, 1903). 

 [The Larva of Anopheles turkhudi (chaudoyei).] — BuU. Soc. Path. 

 Exot., Paris, xi, no. 4, 10th April 1918, pp. 291-297, 8 figs. 



Anopheles turkhudi, List. (Pyretophorus ahaudoyei, Theo.) occurs in 

 the oases of northern Africa. It has been found in both Algeria 

 and Tunisia. Many larvae and nymphs have been found in the 

 highly mineralised water of the Saharan and Lybian oases, where 

 the water is clear over a sandy bottom and there is no trace of vege- 

 tation. Among several hundred individuals collected, all the larvae, 

 except two examples of Ochlerotatus dorsalis, were those of A. turkhudi. 

 The larvae of this Anopheline, which do not seem to have been previously 

 studied, are described in this paper. It is hoped that these notes 

 will be helpful in determining whether A. chaudoyei constitutes a 

 good species or if it should be regarded merely as a marked sub-species 

 of A. turkhudi, with which it is considered synonymous by many 

 systematists. Whatever may be the relation between these two 

 species, the determination of the larvae of this mosquito is of great 

 interest because it is the principle vector of malaria in the Algerian 

 and Tunisian Sahara. 



Chatton (E.). Observations sur le Ver de Guinee. Preuve exp6rimen- 

 tale de I'lnfestation des Cyclops par Voie digestive. [Observations 

 on the Guinea Worm. Experimental Proof of the Infestation of 

 Cijclops by the Digestive Tract.]— 5m/Z. Soc. Path. Exot., Paris, xi, 

 no. 4, 10th April 1918, pp. 338-348. 



In studying the infestation of Cyclops with the guinea- worm, by 

 means of the digestive tract, no change in development of the larvae 

 of the worm has been observed in any individuals of Cyclops studied, 

 but the experiments made are not sufficient to eliminate the possi- 

 bility of such evolution. Some observations have also been made 

 regarding the behaviour of certain Arthropods of the aquatic fauna 

 of the oases towards the larvae of Filaria [see p. 130]. ' 



