120 



heavily infested with blood-sucking Diptera, and a considerable 

 percentage of the inhabitants, both European and native, are infected 

 with Filaria (Loa) loa, as shown by the presence of embryos in the 

 peripheral blood. 



Dissections showed 0-8 per cent, of C. silacea infected, and 2-4 

 per cent, of C. dimidiata. May, June and July are the wettest months, 

 and the largest number of flies was collected during this period. 

 Infected flies in many cases contained hundreds of filarial organisms, 

 situated mostly in the thoracic muscles. In two cases the mouth- 

 parts were infected. 



In the discussion following the reading of this paper, it was suggested 

 that Chrysops should be reared in captivity in order to get clean 

 stock and that these should be fed on cases of infection with embryos 

 of F. loa in the blood. The flies could then be dissected daily, 

 and sections should be cut to show exactly where the development 

 takes place. By this means it should be possible to decide finally 

 the position of C. silacea and C. dimidiata as intermediate hosts of 

 F. loa. 



Laveran (A.) & Franchini (G.). Spirochetose de Punaises des 

 Euphorbes et du Latex. — Bull. Sac. Path. Exot., Paris, xiv, no. 4, 

 13th April 1921, pp. 205-207, 2 figs. 



In their stud}^ of flagellates occurring in Euphorbia [R. A. E., B, ix, 58, 

 106] the authors have found that the bugs that are the usual carriers of 

 the disease are sometimes infected with spirochaetes, and not flagellates, 

 and that this also applies to Euphorbia. Spirochaetes have been 

 found in the Lygaeid bugs, Nysius sp. and Lygaeits pratensis, and 

 in Anthocoris sylvestris. In the latex of Euphorbia pephts a few 

 spirochaetes [Herpetomonas) have been observed. 



MoNTPELLiER (J.), Degouillon ( — ) & Lacroix (A.). Note comple- 

 mentaire sur la Gale filarienne et son Evolution. — Bidl. Soc. 

 Path., Exot., Paris, xiv, no. 4, 13th AprQ 1921, pp. 211-214. 



Observations of 800 Senegalese troops showed that 156 had tumours 

 due to Onchocerca volvidns or were affected with filarial mange, and 

 in these 156, signs of filarial eruption were present in 150, of whom 98 

 harboured filarial cysts and 6 had tumours and no traces of eruption. 



Thus 65 per cent, of the cases of filarial mange harboured cysts of 

 0. volvulus and only 4 per cent, had tumours without filarial mange. 



This is claimed to confirm the conclusions previously reached 

 [R. A.E., B, viii, 183] as to the close relation between onchochercosis 

 and filarial mange. 



Chatton (E.) & Courrier (R.). Sur un Trypanosome de la Chauve- 

 souris, Veperugo pipisfreUiis, a Formes crithidiennes intratissu- 

 laires et cystigenes. Hypothese relative a I'Etiologie du Goitre 

 endemique.— C R. hebdom. Acad. Sci., Paris, clxxii, no. 20, 

 17th May 1921, pp. 1254-1257. 



A species of Schizotrypanum is recorded from bats {Vesperugo 

 pipistrellus) in lower Alsace. The possibility of this trypanosome 

 being the causal agent of goitre is discussed, and its probable trans- 

 mission by insects is suggested. Its hfe-cycle is described. 



