13 



frequently observed. The tick responsible for conveying tbe infection 

 is Margaropus {Boophilus) annulatus. Ixodes corniger, KoL, and 

 Rhipicephalus simus, Koch, are of less frequent occurrence in this 

 region. 



Stefko (W.). Dengue h Tr6bizonde (Turquie) en 1916. [Dengue at 

 Trebizond (Turkev) in 1916.]— Bull. Soc. Path. ExoL, Paris, x, 

 no. 8, 10th October 1917, p. 724. 



Dengue fever is prevalent in Turkey. In June and July 1916, 

 having started in the lower quarters of the town, this disease attacked 

 the whole population of Trebizond, particularly the Russian soldiers. 

 The intermediate host is believed to be Stegomyia fasciata. 



Van Saceghem (R.). Contribution a I'Etude de la Dermite granuleuse 



Chez des Equid6s. [Contribution to the Study of Granular 

 Dermatitis in Horses.]— Sm?^. Soc. Path. Exot., Paris, x, no. 8, 

 10th October 1917, pp. 726-729. 



The three species of Spiroptera known to parasitise horses and 

 cause granular dermatitis are, Habronema megastotna, H. microstorm 

 and H. muscae. These are all carried by the house-fly ; the first is 

 found in the stomach of horses and donkeys, the others in horses only. 

 The course of the development of H. muscae in the fly has been traced 

 [see this Review, Ser. B, iv, p. 12]. Infestation is very frequent in the 

 Lower Congo, and proof that it is carried by flies exists in the fact 

 that horses kept in stables, where Musca. domestica. and Stomoxys are 

 abundant, alone contract the disease. In a stable at Zambi where 

 several horses were affected, 20 per cent, of the flies were found 

 parasitised by a larva which is apparently that of H. muscae, though 

 in the few autopsies made recently only H. megastoma has been found. 

 The larvae, entering a wound, give rise to an inflammation similar to 

 that caused by Anhjlostoma duodenale upon entering the human skin, 

 the irritation causing the animal to enlarge the wounds and thus 

 create an entrance for more parasites. It is hoped that experiments 

 now in progress will further elucidate the nature of this disease. 



Leger (M.). Le Paludisme a la Guyane Franeaise: Index end6mique 

 des diverses Localit^s. [Malaria in French Guiana : endemic 

 Index of various Localities.]— BwZL Soc. Path. Exot., Paris, x, 

 no. 8, 10th October 1917, pp. 749-756. 



Malaria has been recorded by many authors as the principal cause 

 of disease and death in French Guiana. Plasmodium vivax (tertian 

 benign malaria), P. praecox (tertian malignant) and P. malariae 

 (quartan) are all found, but the country, whilst being more malarial, 

 with an average endemic index of 17, than the French possessions in 

 Indo-China, is much less so than any French African colony, its 

 unhealthiness being exaggerated. Although decreasing, malaria is 

 still unfortunately a serious obstacle to the economic development of 

 the country and an immediate anti-malarial campaign is recommended. 



