136 



The larvae of A. kochi, A . indefmihis &nd A . hyrcamis a.Te easy to 

 find in drains and wet places near trees, but those of A. umbrosus 

 and A . albotaeniatus have not been seen ; they probably live in the 

 damp earth and in the dead leaves lying beneath trees. 



A. indefinitus was easily experimentally infected to the extent of 

 10 per cent, with benign tertian and malignant tertian malaria, and 

 A. kochi to the extent of 5-10 per cent. A. umbrosus, A. albotae- 

 niatus, A. barbirostris and A. novmnbrosus remained uninfected. In 

 the case of the remaining species the number of specimens was too 

 small to permit of a proper test. A. kochi may therefore be said to 

 play an important role in the spread of malaria. 



The spleen indices varied from 50 to 25 per cent. The parasite 

 indices varied from 15 to 5 per cent. ; formerly — in 1919 — they some- 

 times reached 50 per cent. Two-thirds of the infection is malignant 

 tertian and one-third benign. 



Better nourishment and not too hard work for the coolies and the 

 reduction of breeding-places by better drainage and extensive oiling 

 should diminish the chances of infection to a point where the 

 administration of quinine wih give better results. 



DA Costa Lima (A.). Contribuipao para o Conhecimento dos Insectos 

 da Familia Polyctenidae (Hemiptera). [A Contribution to the 

 Knowledge of the Insects of the Family Polyctenidae.] — Arch. 

 Escola Sup. Agyic. e Med. Vet., Nictheroy {Rio de Janeiro), iv, 

 no. 2,December 1920, pp.61-76,1 plate. [Receivedl4thjunel921.] 



This sytematic paper contains a list of the species of the 

 Polyctenidae with a key to the genera of these parasitic Rhynchota. 



Paisseau (G.) & LouBRiEU ( — ). Paludisme autochtone a Plasmodium 

 praecox. — Bidl. Soc. Path. Exot., Paris, xiv, no 5, 11th May 1921, 

 pp. 268-273. 



A case of indigenous infection with P. praecox is described and 

 discussed in conjunction with the 12 other cases observed in France 

 since 1917. 



Of the 13 cases 6 were syphilitic, leading to the assumption that 

 the predisposing role ascribed to parasitic diseases, such as dysentery, 

 may be extended, especiahy in a temperate climate like that of France, 

 to syphilis. 



The abnormal climatic conditions do not appear to modify either 

 the virulence of the parasite or the gravity of the affection caused 

 by it. 



There appears to be a possibility that the indigenous cases of P. 

 praecox do not follow the rule that infections with this parasite change 

 with age into infections with P. vivax. Further investigation is, 

 however, needed to investigate this point. 



Referring to the above observations, M. Roubaud mentioned two 

 further cases showing the persistence of the infection with P. praecox 

 during several years. One of them had syphilitic antecedents. 



Laveran (A.) & Franchini (G.). Sur un Herpetomonas du Loir.— 

 Bull. Soc. Path. Exot., Paris, xiv, no. 5, 11th May 1921, 

 pp. 278-280, 1 fig. 



A new Herpetomonad, and for which the name Herpetomonas myoxi, 

 is proposed, is recorded from the blood of the dormouse {Myoxus 

 glis) at Bologna. 



