77 



Among the keys given is one to the characters distinguishing 

 A. fuliginosus, A. jarnesi and A. schiiffneri, and another to those of 

 A. rossi, A. rossi indefinitus and A. ludlowi. 



With the exception of A. umhrosus the breeding-places of these 

 mosquitos were usually in sunny situations ; the larvae of A. barhiros- 

 iris, A. rossi, and A. Jcochi are sometimes found in very shady spots. 

 They may be found in turbid water, but prefer clear water. During 

 these investigations it was remarked that the larvae were not found 

 in containers that were not in direct communication with the ground. 

 Even A. rossi, which occurs nearly everywhere, was not found in empty 

 tins, coconut shells, etc. In daylight none of these Anophelines 

 appear to attack man, but they are very troublesome in the evening 

 in and around dwellings. During a month's stay in a malarial district 

 the author noticed that at twilight some examples of A. kochi, A. fuli- 

 ginosus, A. rossi and A. aconitus came indoors, while A. sinensis 

 became abundant at about 7.30 p.m. and all the former species then 

 disappeared slowly. On the following morning much larger numbers 

 of A. aconitus are to be found than were observed at twilight, so that 

 this mosquito probably enters at midnight or later. Though Anophe- 

 lines attack man in or near dwellings from twilight onwards, they do 

 not appear to do so at their breeding-places. Bats and birds were 

 noticed at the breeding-places apparently occupied in capturing 

 mosquitos. 



Flu (P. C). Het een en ander over Majaria, speciaal over Drainage 

 als een Middel te barer Bestrijding. [Various Notes on Malaria, 

 especially regarding Drainage as a means for combating the 

 Disease.] — Geneeskundig Tijdschr. Nederlandsch-Indie, Batavia, 

 Iviii, no. 4, 1918, pp. 439-461. 



After reviewing the discovery of plasmodia as the causal agents 

 of malaria and the role played by certain Anophelines in transmission, 

 the various measures adopted against mosquitos are mentioned. The 

 drainage systems resorted to in different parts of the world are briefly 

 described, and it is pointed out that systems that are satisfactory 

 from an agricultural or sanitary point of view are not necessarily 

 so as regards the prevention of malaria. 



Strisower (R.). Experimentelle und klinische Beitrage zur Febrls 

 Quintana. [Experimental and Clinical Contributions concerning 

 Five-Day Fever.] — Munchener Med. Wochenschr., Munich, Ixv, 

 no. 18, 30th AprU 1918, pp. 476-480. 



The data recorded in this paper support the view that the virus 

 of five-day (Volhynian) fever is carried in the blood and is transmitted 

 by lice. It is not possible to determine the length of the incubation 

 period. Out of 9 persons exposed to infection 5 contracted the 

 disease. In 2 of these cases incubation took 60 days and there was 

 one case each of 43, 34 and 14 days. This variation is probably due 

 to the degree of virulence of the causal organism [see also this Review, 

 Ser. B, vi, pp. 56, 58]. 



