41 



DA Matta (A.). Un nouveau R§duvide de I'Amazone, Rhodnius 



brethesi, sp. n.—Bull Soc. Path. ExoL, Paris, xii, no. 9, 12th 



November 1919, pp. 611-612. 1 iig. 



Among a number of blood-sucking Rliyndiota sent from various 



localities on the Amazon are many individuals of Rhodnius prolixus, 



Stal, the vector of Chagas' disease. The examples of this genus 



found in mid-forest in the community of Barcelos, Rio Negro, dirfer 



from R. prolixus, R. limosus, R. nasntus and R. pictipes, in havmg 



a generally black appearance, and are therefore regarded as new 



^nd are described under the name, R. brethesi. 



LiGNiERES (J.). Contribution t I'Etude de I'Anaplasmose bovine.— 



Bull. Soc. Path. Exot., Paris, xii, no. 9, 12th November 1919, 



pp. 641-651. 

 As a result of many experiments in the inoculation of Anaplasma 

 argentinum into various animals, it has been shown that guinea-pigs, 

 rabbits, pigs and horses are apparently not susceptible to this parasite. 

 Sheep and goats are susceptible, the parasite remaining in then- 

 blood for years. The passage of the virus from sheep to sheep or 

 from goat to goat is possible indefinitely. The inoculation of A. argen- 

 tinum into sheep and goats does not produce the definite symptoms 

 or lesions of anaplasmosis, nor are the typical parasites visible in 

 the blood. They are however undoubtedly present, as can be proved 

 by further inoculations ; probably they are so small that they are 

 difficult to recognise. The blood of sheep and goats inoculated with 

 the parasite is active when injected into susceptible cattle. The 

 possibility of attenuating the virus in sheep and using it as a vaccine 

 against bovine anaplasmosis will be discussed in a future paper. 



Brumpt (E.). Transmission de la Piroplasmose canine francaise par 

 le Dertnacentor reticulatus. Embolics parasitaires dans les 

 Capillaires de I'Enc^phale.— 5//ZL Soc. Path. Exot., Paris, xii, 

 no. 9, 12th November 1919, pp. 651-664. 4 figs. 



The writings of various authors on the mode of transmission of 

 canine piroplasmosis are briefiy reviewed. The disease is transmitted 

 by the adult stage of the tick,' Bermacentor reticuhius. _ The infection 

 is hereditary, the larvae and nymphs conserving the virus even when 

 reared on immune animals such as the hedgehog or gninea-pig, but 

 being unable to transmit the disease until they reach the adult stage. 

 Larvae and nymphs fed upon virulent blood cannot transmit the 

 disease in their later stages. It has not yet been possible to work out 

 the percentage of female infective ticks of the second generation, but 

 investigations are still being carried on. The parasites multiply 

 chiefly in the capillaries of the brain and also, with less intensity, 

 in the kidney and the bone marrow. 



Laveran (A.) & Franchini (G.). Sur les Flagelles parasites de 



quelques Insectes et sur les Infections qu'ils peuvent produire 



Chez les Souns.—Bull. Soc. Path. Exot., Paris, xii, no. 9, 12th 



November 1919, pp. 665-671, 2 figs. 



Experiments are described in w^iiich white mice were inoculated with 



pure flagellate cultures from mouse and dog fleas, Herpetomonas 



