80 



Hadwen (S.) Parasitic Diseases. — Jl. American Vet. Med. Assoc, 

 Ithaca., N.Y,, liv, no. 6, February 1919, pp. 639-642, 3 figs. 



The author is of opinion that certain ticks, especially Dermacentor 

 alhipictus and possibly D. vemtstus, play an important part in the 

 diseases known as fistulous withers and poll evil that occur among 

 unbroken range horses on the western slopes of the Rocky Mountains. 

 The chief points of infestation are along the whole length of the mane, 

 from the poll to the withers. At each point of attachment there is 

 a necrotic spot after the tick has been attached for a few days and 

 these are probably a favourable point of entrance for bacteria. The 

 bite of D. venustus causes the animal to bite, scratch and rub the 

 affected parts thus further encouraging the introduction of bacteria. 

 As these ticks attach themselves by preference to the base of the 

 mane it should be a simple matter to treat them with one of the 

 usual oily dressings, such as a mixture of 4 gals, train or seal oil, 

 I gal. tar, and 1 lb. oil of turpentine, which should be well rubbed in 

 after shearing. 



ScHWETz (J.). Quelques Remarques concernant les Moeurs de la 



Glossina tabaniformis, Westw. — Ann. Trop. Med. ParasxL, Liver- 

 pool, xii, no. 3-4, 28th February 1919, pp. 279-280. 

 Glossina tabaniformis, Westw. . is one of the rarest species of Glossina 

 and one that has received little attention, the few individuals that 

 are known having comj from Western Africa. The species has been 

 found at Leopoldville, in the Belgian Congo, and the author now 

 records it from the province of Katanga. Four days' inspection of 

 the locality produced three individuals, together with a number of 

 G. jmlpalis. The first fly was taken on a tree-trunk after sunrise, 

 and another was taken in the same position the next day at sunset. 

 No pupae could be found in the vicinity. 



ScHWETz (J.). Quelques Observations Pr61iminaires sur les Moeurs de 



la Pangonia zonata. Walk. — Ann. Trop. Med. Parasit., Liverpool, 

 xii, no." 3-4, 28th February 1919, pp. 281-288. 

 While Tabanids such as Haematopota, Tabamis and Chrysops are 

 fairly abundant in the Belgian Congo, especially near water, flies 

 of the genus Pangonia are rarely seen in North Katanga. In certain 

 localities, however, they are abundant from the end of April until 

 early July, that is, during the blossoming of a plant, a species of 

 Blepharis, from which they extract the nectar. Pangonia zonata, 

 Wlk., is the most numerous species, and both this and an unidentified 

 species of the same genus attack man, the bite being particularly 

 deep and painful, although they do not appear eager to attack human 

 beings and seem to be easily disturbed when biting. They are notice- 

 able from early morning until about 11 a.m. and disappear almost 

 completely from noon until about 3 p.m. 



Carter (H. F.). New West African Ceratopogoninae. — Ann. Trop. 



Med. Parasit., Liverpool, xii, no. 3 & 4, 28th February 1919, pp. 



289-300, 1 plate, 4 figs. 

 The small Chironomid flies forming the sub-family Ceratopo- 

 goninae are of considerable economic interest, as a number of species 



