236 



and penetrate into the human bod}^ when ingested with the water — 

 though requiring verification, should be reconsidered ; and he gives 

 evidence to support this. 



RoDENWALT (E.). Eiitomological Notes. — Repts. Dutch- Indian Med. 

 Civil Service, Batavia, 1922, no. 3, pp. 185-187, 1 plate. 

 According to Swellengrebel it is not possible to distinguish the males 

 of Anopheles suhpictus var. malayensis, Hack. {Myzomyia rossi, Giles) 

 from those of A. {M.) vagus, Don. Examination of the fore-legs, 

 however, shows differences that appear to be constant, and these 

 are described and figured. 



Some mosquito records, not yet included in Swellengrebel's lists 

 [cf. R.A.E., B, ix, 216, etc.] are given. 



Sergent (Ed.) & DoNATiEN (A.). Transmission naturelle et experi- 

 mentale de la trypanosomiase des dromadaires par les Stomoxes. — 



Arch. Inst. Pasteur Afr. Nord., ^/g/f^'.s, ii, no. 3, September 1922, 

 pp. 291-315. 

 The mechanical transmission of trypanosomiasis in camels in North 

 Africa by Stomoxys has been recorded in a preliminary note [R.A.E., 

 B, X, 108]. An account is given here of a severe outbreak of the disease, 

 which is known to be transmitted in open country by Tabanids, the 

 larvae of which abound in the damp sand at the bottom of valleys, 

 and in more inhabited localities by Stomoxys, the larvae of which are 

 "found in the straw manure in stables. 



Sergent (Et. & Ed.). Etude experimentale du paludisme des oiseaux 



{Plasmodium relictum). — Arclu Inst. Pasteur Afr. Nord., Algiers, 



ii, no. 3, September 1922, pp. 320-329. 



In one series of experiments on the action of quinine, a strong dose 



injected into canaries on the same day that they were bitten by infected 



specimens of Ciilex pipiens had no influence on the resultant infection. 



ViALATTE (C). Essai de coordination de quelques donnees relatives 

 a la biologic des parasites du paludisme. — Arch. Inst. Pasteur 

 Afr. Nord., Algiers, ii, no. 3, September 1922, pp. 341-348. 

 A survey of the extensive literature on the classification of the 

 species of Plasmodium found in man gives the following positive data : 

 The multiplicity of the morphological types of Plasmodiutn ; the 

 seasonal alternation of these ; the fact that in cultures in vitro haema- 

 tozoa may be obtained of forms different from those placed in them ; 

 the failure of the species of Plasmodium found in man to infect animals ; 

 and the disappearance of the infecting power of Anophelines during 

 hibernation. If an attempt is made to coordinate these facts, it 

 at once becomes apparent that the purely morphological differences 

 between the various types of Plasmodium are not sufficiently marked 

 or fixed to justify a division into distinct species. There is a corre- 

 lation between the appearance of a certain morphological type ■ 

 (P. praecox) and the period of the year in which Anopheline activity 

 has reached its maximum. These facts do not contradict the hypothesis 

 that the large amoeboid forms represent a more perfect adaptation 

 of the Plasmodium to endoglobular parasitism. To confirm this 

 it would be necessary to find and follow in the blood the transitional 

 parasitic forms, and to reproduce experimentally the alternation of 

 morphological forms by passing the Plasmodium from one man to 

 another with an Anopheline as an intermediar}'. '(.i_, 



