217 



infections occur of a severe mixed type of malaria, chiefly malignant 

 tertian. The measures to be taken are outlined. Besides quinine 

 prophylaxis and the segregation of gamete-carriers, anti-Anopheline 

 work is advised, including the destruction of breeding-places, the 

 introduction of larva-destroying fish (such as Girardinus caudimaculatus 

 or Poeciliajamiaria), and the clearing of areas within about 900 yards 

 of townships, such areas to be used for pasturing cattle as an attraction 

 for the mosquitos. 



Pi: KYAssu (A). Os Mosquitos Portadores de Ovos da Mosca do " Berne." 

 (Nota previa.) [Mosquito Transporters of the Eggs of Dennalobia 

 hominis. Preliminary Note. J — A Uolha Mcdica, Rio de Janeiro, 

 iii, no. 14, 15th July 1922, p. 105, 1 fig. 



The author has found eggs of Dermatohia hominis, L., under the 

 abdomen of a mosquito, Psorophora poslicata, Wied., this being the 

 first observation of the kind in Brazil, though it has been recorded 

 in Venezuela and elsewhere [cf. R.A.E., B, v, 18, etc.]. 



Mello LeitAo (— ). Aranhas pegonhentas do Brasil. [Poisonous 

 Spiders of Brazil]— Chacar as e Quintaes, S. Paido, xxvi, no. 2, 

 15th August 1922, pp. 99-102, 7 figs. 



This paper gives a brief account of the various poisonous spiders 

 found in Brazil, where deaths due to them are known to occur 

 occasionally. 



Bodkin (G. E.). [Report of the] Government Economic Biologist.— 



Rept. Dept. Set. & Agric. [Brit. Guiana], 1920, Georgetown, 

 1922, Appx. iii, pp. 55-58. 



In a mosquito survey undertaken during the driest time of the 

 year, when breeding-places were reduced to a minimum, Anophelines 

 were found to be breeding almost exclusively in the cane cultivations 

 in proximity to the thickly inhabited parts of the estates, where the 

 small drains provide favourable breeding-places. The species observed 

 included Aedes (Ochlerotatus) scapularis, Rond., Culex similis, Theo., 

 C. corniger, Theo., C. Jatigans, Wied. {quinquefasciatus. Say), Urano- 

 taenia geometrica, Theo., Anopheles tarsimaculatus, Goeldi, Aedomyia 

 squamipennis, Arrib., and Aedes argenteus, Poir. 



The survey included also a study of the problem of the house-fly 

 (Mtisca domestica, L.). These surveys, if vigorously followed up by 

 the estate authorities by means of the institution of sanitary methods 

 for the elimination of these pests, would result in greatly improved 

 conditions, 



DU BuYSSON (H.). Recherches synonymiques sur Argas reflexus, 

 Fabr. (verus) et Ixodes marginatus, Fabr. [verus). — Misc. Ento- 

 mologica, Uzes, xxvi, no. 7, July 1922, pp. 49-50. 



Attention is called to the fact that though the figures of Dug^s 

 (1850), Coquebert (1804), and probably also those of Latreille (1806) 

 and Hermann (1804), refer to Argas reflexus, F., the subsequent 

 identifications published under this name relate to ^. columbae, Herm., 

 and the latter name must therefore be used for the Argasid infesting 

 pigeons. The host of the true A. reflexus, F., is uncertain, but 

 according to Cabanes it came from the nests of swifts. 



