114 



has been transmitted to horse, mule, donkey, dog, cat, rabbit, guinea- 

 pig, rat, cattle, goat and sheep, but the mode of transmission under 

 natural conditions has not been definitely ascertained. Biting flies 

 are the suspected factors, but brief experiments made with Tabanids 

 caught in the infested area gave negative results. 



Legendre (J.) & Oliveau (A.). Role du Lapin domestique dans 

 I'Attraction et la Nutrition d'' Anopheles macnlipennis. — C. R. 

 Hehdom. Acad. Sci., Paris, clxxh, no. 13, 29th March 1921, 

 pp. 822-823. 



Further experiments confirm those already noticed [R.A.E., B, 

 viii, 98] with reference to the preference shown by Anopheles maculi- 

 pennis for the blood of rabbits. The mosquitos congregate on the 

 ceiling in rabbit hutches, a habit that should simplify their destruction. 



RoDHAiN (J.). Un Sarcoptid^, nouveau Parasite de la Roussette 

 africaine {Eidelon helvum, Kerr). — C. R. Soc. Biol., Paris, Ixxxiv, 

 no. 14, 23rd April 1921, pp. 757-759. 



A brief description is given of a new Sarcoptid mite found infesting 

 a bat {Eidelon helvum) in the Belgian Congo. 



RoDHAiN (J.) & Gedoelst (L.). Les A££init6s du Sarcoptid^ de 



VEidelon helvum. — C. R. Soc. Biol., Paris, Ixxxiv, no. 14, 23rd 

 AprU 1921, pp. 759-760. 



The systematic position of the Sarcoptid mite recorded in the 

 previous paper is discussed, and the name Nycteridocoptes pleropi is 

 proposed for it. 



Hylkema (B.). De Ontwikkeling van de Parasiet der Quartana in de 

 Myzomyia ludlowi en haar Overbrenging op den Menseh. [The 

 Development of the Parasite of Quartan Malaria in Anopheles 

 ludlowi and its Transmission to Man.] — Meded. Burg. Geneesk. 

 Dienst Ned.- Indie, Batavia, 1920, no. 6, pp. 50-99, 2 plates. 

 (Also in English). [Received 5th May 1921.] 



These experiments in the transmission of quartan malaria to man 

 were made at Belawan, an island mostly covered with mangrove, 

 which is the sea-port of the east coast of Sumatra and in which 

 Anopheles {Myzomyia) ludlowi is the only Anopheline found. 



As the mosquitos could in most cases be infected to the extent 

 of 100 per cent, with subtertian, it was natural to expect them to be 

 not less susceptible to quartan malaria. It was found that they 

 could regularly be infected with quartan to the extent of 20 per cent, 

 and occasionally to 50 per cent. The percentage of mosquitos that 

 could be infected increased in proportion to the number of gametes 

 in the blood of the gamete-carriers. In 11-13 days after the gametes 

 had been introduced, the mosquitos proved capable of transmitting 

 the infection to man ; the period of incubation until the prodromal 

 attack amounted to a further 12 days. The period of development 

 of quartan in A . ludlowi lasts at the most only a little longer than that 



