21 



The farms in this district have an abundance of decaying organic 

 material in their vicinity, and mosquitos are numerous during the 

 summer months. Prior to the War there were presumably no malarial 

 inhabitants in this region. It is significant that one of the patients 

 had been living during the whole summer in a part of the country 

 which had been occupied by Indian troops, among whom recrudescent 

 cases of malaria were common. The occurrence of these cases raises 

 the question of the possibility of the disease remaining endemic, and 

 suggests the necessity for the adoption of strict anti-malarial measures 

 in these localities. 



JoYEUx (C). Sur quelques Arthropodes recolt6s en Haute-Guin6e 

 francaise. [Some Arthropods collected in French Upper Guinea.] 

 — Bull. Soc. Path. Exot., Paris, viii, no. 9, 10th November 1915, 

 pp. 656-659. 



The larvae of Amhlyomma variegatmn are very abundant at the 

 beginning of the dry season, from early November to February. Both 

 man and animals are attacked by these larvae, which begin to drop of? 

 12 hours after attachment. The nymphs also attack man, but less 

 frequently and only one definite case of attack by the adult was 

 observed. Dernmnyssus gallinae and D. hirundinis are common in 

 poultry houses and in the nests of the swallow, Hirundo rufula, Riipp., 

 and the swift, Micropus affinis, Gray, attached to roofs. As in Europe, 

 the bites of these mites cause irritation which disappears in a few days ; 

 they do not appear to transmit any Haematozoa. The author also bred 

 Cimex boueti, for which Roubaud has since suggested the generic name 

 Lept^cimex. Hippohosca maculata, Leach, is common. It bites horses, 

 cattle and sheep, but the author has never succeeded in inducing it 

 to attack man. The whitish puparium laid by the female blackens in 

 24 hours, the adult emerging in from 23 to 30 days. Glossina palpalis 

 and G. morsitans are frequently met with on the banks of the Niger 

 and its tributaries, two examples of G. morsitans being taken for every 

 52 of G. palpalis. The Simuliidae collected were all allied to Simulium, 

 aureuyn. 



The author bred the following mosquitos : Culiciomyia nebulosa, 

 Theo., Culex duttoni, Theo., A^wphehs {Pyretophonis) costalis, Lw., 

 which was very numerous, A. (Myzomyia) fuTWstus, Giles, Cyathomyia 

 fusca, Theo., Stegomyia fasciata, F. {calopus, Meig.), and Toxorhynchites 

 brevipalpis, Theo. The larvae of the last species are very carnivorous 

 and destroy all the usual fauna in native pots. The pupal stage lasts 

 six days. 



Only one case of human myiasis, caused by Lucilia argyrocephala, 

 Wied., was noticed. Seven cases of animal m3dasis due to Pycnosoma 

 {Chrysomyia) bezziana, Vill. {megacephala, Bezzi nee Fabricius), were ob- 

 served. This species has also been recorded in the Upper Ivory Coast by 

 Bouet and Roubaud and in the Belgian Congo by Rovere, who worked 

 out its life-history. The female lays from 70 to 95 eggs on the skin. In 

 from 18 to 24 hours the larvae penetrate to the subcutaneous tissue 

 and develop in it. The adult larvae fall to the ground and pupate 

 there. While Rovere only observed this myiasis in cattle, the author 

 also found it in horses. Sarcophaga nurus was also present ; pupation 

 in this species takes place in 14 days, the adults emerging 24 to 30 days 



