168 



less common than in former years, when it was recorded as having 

 been so numerous and so persistent in its attacks as to kill mules and 

 cattle. 



The following new species are described : — Prosimulium midalum, 

 from New Jersey, British Columbia and Alaska ; Paraswmlmm 

 furcation, from CaUfornia ; Simulium aureopunctatum, from Guatemala 

 and other southern districts ; Simulium hippovormn, from Mexico ; 

 S. hivittatum, from new Mexico ; S. pamassum from New Hampshire 

 and Virginia ; S. arcticum , from British Columbia ; S. clavipes, from 

 Guadaloupe ; S. jenningsi, from Louisiana, which persistently attacks 

 horses in South Carohna, S. haematopotum, from Mexico and Cuba ; 

 and S. forhesi from Havana, 111. S. johannseni is a pest in the Illinois 

 river region, near Havana, 111., and occurs in great numbers but 

 does not appear to attack man, while /S./or6esi not only attacks 

 stock but also man, and is exceedingly numerous. There is a good 

 deal of evidence that S. forbesi can travel for distances of at least 

 five miles. The staff of the Illinois State Laboratory of Natural 

 History have found the parasites mentioned by Strickland [see this 

 Review, Ser. B, i, p. 77] commonly in Simulium larvae in both the 

 Ilhnois and Sangamon Rivers. Apparently S. vittatum was the only 

 species affected, the percentage of parasitised individuals being very 

 large. 



The paper concludes with a catalogue of the North American and 

 Central American Simuliidae, and a list of the principal papers deahng 

 with them is given. 



Malisch ( — ). Die Malaria im Sudosten Deutschlands. [Malaria in 

 south-eastern Germanv.] — Deutsche Mediz. WochenscJir., Berlin, 

 xl, no. 15, 9th April 1914, pp. 763-764. 



The endemic malaria centre in the Pless district of south-eastern 

 Germany is little heard of, as the disease is not notifiable and the 

 inhabitants treat themselves with quinine without medical aid. In 

 every one of the 100 cases observed by the author in 1913, water 

 existed near by. Most of the cases occurred in May and June, 

 continuing until early in October. The Pless district has about 125,000 

 inhabitants and an area of over 1,000 square kilometres of woodland 

 and meadow land. The southern portion is covered with ponds. The 

 ground does not allow the water to escape easily, rain falls abundantly, 

 and the temperature is sufficiently warm to afford suitable conditions 

 for Anopheles. Corethra, Culex and Anopheles are to be found every- 

 where and cover the ceihngs of the cellars and cattle-sheds in the cold 

 weather. The regulation of the Vistula and the work of many drainage 

 societies is restricting the mosquito area. 



Mayer (M.). Uebertragung von Spirochaeta gallinarum durch Milben. 



[The transmission of Spirochaeta gallinarutn hy Mites.]— Arch. f. 

 Schijfs- u. Trop. Hyg., Leipzig, xviii, no. 7, April 1914, 

 pp. 254-255. 



In the Tropical Institute at Hamburg, canaries are used for main- 

 taining a supply of Spirochaeta gallinarum.. A canary injected with 

 another infection having died of spirochaetosis, mites from a bird 



