40 



been brought to the point where control is possible is the elucidation 

 of the life-cycle and economy of the bont tick [Amblyomma varicgatitni] 

 in its relation to heart-water in sheep, goats and cattle. This has made 

 it possible for the merino sheep and the Angora goat to be reared again 

 on farms that were abandoned 25 or 30 years ago on account of the 

 prevalence of the disease. 



Milks (H. J.). The Diagnosis and Treatment oi certain Skin Diseases 

 o£ Small Animals. — Jl. Amer. Vet. Med. Assoc, Wasliingion, D.C., 

 N.S. xi, no. 3, December 1920, pp. 289-300. 



A few of the more important non-parasitic diseases are dealt with, 

 and also the different forms of mange — sarcoptic, otodectic and 

 follicular. 



For parasitic otorrhea (ear mange) in cats and dogs. Glass advises 

 1 part of nitrate of mercury to 8 of almond oil, and the author had fair 

 success with 1 part of this ointment to 3 of lard, but the treatment must 

 be persisted in for a considerable time to effect a cure. The same treat- 

 ment also succeeded in some cases of the squamous type of follicular 

 mange. 



Chamberlix (R. v.). South American Arachnida, chiefly from the 

 Guano Islands of Peru. — Bivoklvn Miis. Sci. Bull., Brooklyn, iii, 

 no. 2, 27th September 1920, pp. "35-44, 1 plate. 



The ticks found were the Argasids, Ornithodoros amhliis, larvae, 

 probably of this species, being found on penguins {Spheniscus hnmholdti), 

 and Ornithodoros talaje, Guer., on a nestling booby [Siila nebouxi). 



Fraser (A. D.). Notes on Blood-sucking Flies in North Russia during 



the Summer of 1919. — Bull. Ent. Res., London, xi, pt. 3, December 

 1920, pp. 195-198. 



Tabanids in North Russia are extraordinarily abundant and 

 aggressive, so much so that the inhabitants perform most of their 

 outdoor work during the night, and keep their animals in sheds during 

 the heat of the day. Paraffin is sometimes used as a repellent. 



Flies of the genus Tahanus were the greatest pest, being much 

 more numerous than those of Haematopoia and Chrysops. Tahanus 

 tarandimis, L., T. macidicornis , Ztt., and T. nigrifacies, Gob., were 

 widely distributed, and were the predominating species in the first 

 half of the summer, after which the}/ were gradually replaced by others. 

 Haematopota appeared to be a more active biter than Tahanus, con- 

 sidering its smaller numbers. Flies of the genus Chrysops, of which 

 C. caecutiens was numerous near water, were not so troublesome, 

 owing to their smaller numbers and their habit of rarely commencing 

 to bite on first alighting. 



There is no evidence that any of the flies with which this paper is 

 especially concerned conve3'ed any disease to man or domestic animals, 

 but much discomfort and annoyance was experienced from their 

 constant attacks, and some individuals suffered from bites that 

 developed into septic sores requiring medical attention. 



In an appendix to this paper b}- Major Austen attention is drawn 

 to other papers on the same subject [R.A.E., B, iii, 195], and an 

 instance is quoted of settlers in parts of Siberia, such as the shores of 

 the river Om, having been compelled entirely to abandon the zone 

 infested by these flies. A list is given of the Tabanids and other biting 

 flies taken by Major Fraser and other collectors during 1918-19. 



