107 



dangerous malaria mosquitos — A. fidiginosus, A. stephemi 'dnd A. cuh- 

 cifacies. At the same time attention is called to the fact that other 

 mosquitos, such as Anopheles suhpictus and Culex spp., though 

 they do not transmit malaria, are able to transmit filariasis. 



The methods of mosquito control suggested consist of :— clearing the 

 rivers and water-courses of algae and water- weeds ; deepening shallow's to 

 discourage the growth of weeds, and stopping the flow of sullage into 

 the river for the same reason ; the introduction of larvicidal fish of 

 hardy local kinds, which also require pure water without sullage, and 

 the extermination of predatory fish that attack them ; the encourage- 

 ment of the keeping of ducks' and geese, which eat up floating matter 

 and probably mosquito larvae ; and the oiling of pools and drains that 

 cannot otherwise be reached. 



At the same time there should be a house-to-house treatment of 

 malaria patients, with free distribution of quinine. Education of the 

 children in the subject of mosquito control is probably the best way of 

 reaching the peo])le generally. 



SiGLER (T. A.). Principal Parasites of Swine.— J»?cr. Jl. Vet. Med., 

 Chicago, xv, no, l, April 1920, pp. 117-150. 



The louse, Haematopinus suis, is the external parasite most frequently 

 found on pigs [R.A.E., B, vi, 170]. A common source of infestation 

 is stock from infected herds, while filthy styes are prolific centres of 

 infection. Pigs that are heavily infested are restless and do not feed 

 well, while their sores open up new avenues for other infection. Their 

 habits make it difficult to free a herd from lice, but they should be 

 sprayed or dipped with kerosene emulsion, or in cold weather a powder 

 composed of pyrethrum and naphthaline should be dusted on them and 

 on their bedding. After treatment the pigs should be moved to fresh 

 quarters, the pens and houses should be sprayed, and all litter burned. 



Herms (W. B.). Occurrence of IVIalaria and Anopheline Mosquitoes 

 in Middle and Southern California. — U.S. Public Health Repts., 

 Washinqton. B.C., xxxv, no. G, 6th February 1920, pp. 275-281. 

 [Received ISth April 1920.] 



A summary is given of the work in the middle and southern portions 

 of California during the State-wide malaria-mosquito survey. This 

 part of the survey was made in 1917 and 1919, and has already been 

 noticed [R.A.E., B, vi, 70 and viii, 93]. 



Petrocchi (J.). Anofalino trasmisor d3 Malaria encontrado en la 

 Capital Federal.— /?t';. Inst. Bad., Buenos Aires, ii, no. 3, 

 October 1919, pp. 295-302, 2 plates. 



Anopheles {Cellia) argijrotarsis, R.D., a known malaria transniitter, 

 has recently been ca])tured in Buenos Aires. It is ])robablc that this 

 is the samespecies as that described by Arribalzaga in 1891 as Anopheles 

 albitarsis. 



The Anophehnes at present known to occur in Argentina include 

 A. anmdipalpis, A. pseudopunctipemiis, A. argyrotarsis, A. {Cellia) 

 albimanus, A. (C.) tarsimaculatus and A. {Arribalzagia) maculipes. 



