150 



With the exception of two isolated individuals caught in the plain, 

 G. brevipalpis, Newst., was only found in the forest bordering the 

 rivers and streams. 



G. morsiians, Westw., is met with all the way from about 7 miles 

 beyond Kabambare on the road to Tanganyika up to the Kalembe 

 mountains, increasing in numbers where vegetation becomes denser. 

 Thus the area covered by G. morsitans borders closely on the south- 

 eastern limit of the great equatorial forest and reaches far beyond 

 5° S., apparently extending between the 28th and 29th parallels, 

 to the east at least, nearly as far as 4° S. 



The absence of G. morsitans east of Kalembe as far as Baraka is 

 surprising in view of the favourable conditions, but is possibly due 

 to the barriers caused by the mountain chain covered mth scanty 

 trees stretching parallel with Lake Tanganyika as far as Lake 

 Edward. 



Mercier (L.) & Lebailly (C.)- Myxosarcome et Acariens chez une 

 Poule.— C.i?. Soc. Biol., Paris, Ixxxii, no. 21, 5th July 1919, pp. 

 802-803. 



A case of cancer in a hen is described, the tumour being a myxo- 

 sarcoma. The bird was infested by numbers of Sarcoptid mites, 

 belonging to two species, Laminosioptes cysticola andCytoleichusnudus, 

 the former being present in the conjunctive tissue of the thoracic 

 muscles and thighs and the latter in the respiratory system. The 

 hypothesis has already been suggested by Borrel that Acarids may 

 play the role of carriers of cancerous tumours to man and other 

 mammals, by inoculating the cancer virus, if such there be, into 

 receptive cells. Although this hypothesis has been disputed by certain 

 authors, it is suggested that it might be well to investigate the 

 possibility of a connection between this infestation by C. nudus and 

 the existence of the myxosarcoma. In view of the fact that tumours 

 have been produced in hens by inoculating them, not with intact 

 cancerous cells but with an extract from tumours, it is suggested 

 that G. nudus may act in the same role as the needle of a syringe. 



Torrance (F.). Cattle Mange in the West. — Agric. Gaz. Canada, 

 Ottawa, vi, no. 6, June 1919, p. 531. 



In consequence of the prevalence of cattle mange in southern 

 Alberta and south-western Saskatchewan, restrictions have existed 

 for many years over these regions, prohibiting the movement of 

 cattle out of that area. The difficulties of collecting cattle for dipping 

 owing to the nature of the country are described ; in spite of these, 

 regular dipping has so greatly improved the conditions that a large 

 territory is practically free from infestation, and very shortly some 

 8,000 square miles will be freed from the regulations. The ranch 

 lands are gradually being divided up into small holdings and fenced 

 in, and under these conditions the eradication of mange will become 

 easier, and it is hoped that the boundaries of the mange area may 

 gradually be contracted until the infestation is finally eradicated 

 [see also this Review Ser. B, vi, pp. 14, 15]. 



