154 



Laveean (A.) & Fkanchini (G.). Herpetomonas et Spirochaeta de la 

 Blatte orientale. — Bull. Soc. Path. Exof., Paris, xiii, no. 5, 12th 

 May 1920, pp. 331-333. 



Since the previous paper was published [R.A.E., B., viii, 88] cock- 

 roaches, Blatta {Periplaneta) orientalis, collected in Paris and the en- 

 virons have been examined, and although the flagellates, Herpetomonas 

 periplanetae, were present in small numbers, spirochaetes, Gregarina 

 blattarum, and other organisms were more frequently found. 



These included SpirocJiaeta periplanetae, sp. n. , which is here described. 

 Observ^ations made with this organism indicate the possibility of 

 hereditary infection. Of five white mice inoculated with the contents 

 of the digestive tube of Periplaneta orientalis infected with S. peri- 

 planetae, one died 24 hours and another 48 hours after inoculation, 

 two became infected and the fifth apparently escaped infection. 

 Individuals of BlaUella {Phyllodromia) germanica were also examined, 

 but neither Herpetomonas nor spirochaetes were found. 



Jamot(E.). Essai de Prophylaxie niedicale de la Maladie du Sommeil 

 dans rOubangui-Chari.— jBi/W. Soc. Path. Exot., Paris, xiii, no. 5, 

 12th May 1920, pp. 343-376. 



The prophylactic measures against sleeping sickness organised by the 

 Governor General in the French Congo during 1916 are discussed, 

 mainly from the medical aspect. The infected area was divided up 

 into sections, and this paper deals chiefly with the district of Ubangi- 

 Shari. 



Glossina morsitans is apparently not responsible for the propagation 

 of sleeping sickness in this district, there being but few places where 

 this fly is very numerous. G. fusca and G. tachinoides are most abun- 

 dant along the small rivers, the banks of which are covered with timber. 



The distribution of Glossina palpalis is very irregular. In general 

 the disease is less serious in the regions where the fly is rare or entirely 

 absent, though no precise correlation can be found between the in- 

 cidence of the disease and the density of the fly. 



PiOT (A.). Sur le Fonctionnement dun Secteur de Prophylaxie centre 

 la Trypanosomiase au Congo francais [1919).— Bull. Soc. Path. 

 Exot., Paris, xiii, no. 5, 12th May 1920, pp. 376-384, 1 map. 



The medical prophylaxis carried out in the Ibenga-Motaba section 

 of the French Congo is described. The distribution of Glossina is very 

 similar to that recorded in the preceding paper. The flies are most 

 abimdant about the middle third of the course of the rivers Ibenga and 

 Motaba and disappear completely along their upper courses. Tsetse- 

 flies were absent in the villages and adjoining forests lying on the 

 same level as the upper water of these rivers. Mosquitos were alsO' 

 absent at this level, but were abundant in the lower villages . 



Marchand (W.). Thermotropism in Insects. — Entom. News, Phila- 

 delphia, xxxi, no. 6, June 1920, pp. 159-165. 

 Among a number of examples of the reaction of insects to heat, the- 

 most characteristic instance of thermotropism, affecting the blood- 

 sucking instinct of mosquitos, has already been noticed [R.A.E., B, vii. 



