152 



whether the tick, Ixodes ricinus, L., could transmit Piroplasma caballi 

 in Germany. As specimens of Dermacentor reticulatus, F., universally 

 held to transmit P. caballi. were available, experiments were also made 

 with this species. 



Ail experiments with I. ricinus proved negative, and this tick seems 

 incapable of carrying P. caballi. These results and those given in the 

 second communication (with Nuttallia equi) show that there is little 

 danger of equine piroplasmosis becoming established in Germany. 



The tests with D. reticulatvs proved positive, thus confirming this 

 tick as the carrier of P. caballi. The ticks can become infected in the 

 larval stage and in that case they are not only infective in the nymphal 

 stage, but the act of transmitting infection does not cleanse them 

 and the adults are also infective. Infected ticks can therefore transmit 

 the disease in two consecutive stages without ingesting infected blood 

 in the interval. This behaviour has not been observed before in the 

 case of the Ixodinae. 



Plehn (A.). Zur Epidemiologie der Malaria. [The Epidemiology of 

 Malaria.] — Arch. f. Schiffs- u. Trop.-Hyg., Leijmc, xxiii, no. 17, 

 September 1919, pp. 371-386, 2 diagrams. 



The contents of this paper are indicated by its title. It is pointed 

 out that many difficulties hamper a study of the distribution of malaria 

 infections throughout the year and their relation to the difierent 

 seasons, and that these difficulties were not solved at the time that 

 the role played by Anophelines was discovered. 



Schilling (V.). Uber die schwere cilicische Malaria. [Notes on the 

 severe Cilician Malaria.] — Arch. f. Schiffs- u. Trop.-Hyg., Leipsic, 

 xxiii, no. 20-21, November 1919, pp. 475-498, 1 map, 3 charts. 



In the Taurus and Amanus regions of Cilicia malaria in a severe 

 endemic form was observed in 1916. This paper deals mainly with 

 the medical aspect of the question. It is stated that during the sum- 

 mer of 1916 Culex and Stegomyia, both cistern and well breeders, were 

 found at Aleppo, but no Anopheles were noticed. 



SWELLENGREBEL (N. H.) & SwELLEXGREBEL-DE GrAAF (J. M. H.). 



Lijst van Anophelinen uit het Oosten van den Archipel, met 

 nadere Beschrijving van de voor Ned.-Indie nieuwe Vormen. 



[A List of Anophelines from the East of the Malay Archipelago, 

 with a fuller Description of the Forms new to the Dutch East 

 Indies.] — Reprint from Geneesk. Tijdschr. Ned.-Indie, Batavia, 

 Lx, no. 1, 1920, 18 pp., 3 plates, 1 map. 



The area dealt with, extending from west to east, includes Celebes, 

 the island south of Celebes, and the Moluccas (including western 

 New Guinea). 



The species found were : — Anopheles hyrcanus (sinensis). A. barbi- 

 rosiris, A. indefinitus, A. subpictus (rossi), A. ludlowi, A. leucosphyrus, 

 A. punctulatus, A. barbirostris var. pallidus, A. anmdipes var. molxc- 

 censis, A. punctulatus var. orientalis, A. aitkeni var. insulae-florum, 



