198 



Hong Kong, previously determined as a variety of C. minutissimus ; 

 Megarhinus alhipes, sp.n., reared from hollow trees at Simla ; Urano- 

 taenia rutherfordi, sp.n., from Ceylon ; U. roperi, sp.n., from Borneo ; 

 Topomyia trifida, sp.n., from Borneo, previously recorded as T. rubi- 

 thoracis ; T. tenuis, sp.n., from Malay Peninsula ; Heizmannia hima- 

 layensis, sp.n., breeding in a hollow tree-trunk, N. India ; H. chandi, 

 sp.n., reared from tree-holes, S.W. India ; Haemagogus discrepans, 

 sp.n., from S.W. India ; and Armigeres maximus, sp.n., from Sumatra. 



Further examination shows Culex hensemaeon, Dyar, to be only an 

 aberration of C. fatigans, Wied. 



The author considers that his previous use of the name Micraedes 

 to include all species of Culex with short male palpi, has little justifi- 

 cation. 



Culex {Lophocer atomy ia) fulleri, Ludl., previously treated as a 

 synonym of C. rubithoracis, Leic, is now considered to be distinct. 



Dale (J.). Flies on a Sanitary Site and Typhoid in a Boys' Home. — 



Med. Jl. Australia, Sydney, 9th Year, i, no. 25, 24th June 1922, 



pp. 694-695. 

 In 1920 a large quantity of flies were found emerging from a sanitary 

 site ; they were nearly all Musca domestica, with a few blow-flies. 

 The occupants of a boys' home near the site had been plagued with 

 flies, and 22 cases of enteric fever had been notified. It is probable 

 that large numbers of flies could be destroyed on such sites by a bait 

 of 10 gm. sodium arsenite and 100 gm. of molasses in a litre of water, 

 the solution being sprayed on to boughs of evergreen trees or other 

 impervious surfaces. This bait has disadvantages owing to its poison- 

 ous nature, but the scarcity of flies in mining localities where arsenic 

 is liberated into the atmosphere is notable. 



Bruce (E. A.). Tick Paralysis in British Columbia. — Canada Dept. 

 Agric. Health of Animals Branch, Ottawa, Bull. 28, 1920, 

 4 pp., 1 plate. [Received 8th August 1922.] 



Dermacentor venustus is found over the greater part of South-Eastern, 

 and occasionally in South- Western, British Columbia. The female may 

 under certain conditions cause paralysis sometimes followed by death in 

 man and animals, chiefly children and sheep. The life-history is given. 



The disease in sheep is seen in the early spring, usually in dry and 

 warm localities. Animals that recover apparently develop an 

 immunity. When only a few are affected, hand-piCking of the large 

 female ticks from the head, neck and back is recommended. If a 

 large number are infested, and if the weather permits, a dip containing 

 arsenic should be used. 



The commonest tick on cattle and horses is D. albipictus, the life- 

 history of which has already been noticed [R.A.E., B, vii, 2]. An 

 arsenical dip is effective, and greasy preparations, such as 10 oz. 

 kerosene, 10 oz. lard, 2 oz. pine tar and 1 oz. sulphur ; or \ pint kero- 

 sene, \ pint linseed oil and 1 oz. sulphur, will kill these ticks. 



In man paralysis is confined to the nerves governing movement 

 and does not aft'ect the special senses. Ticks ma}^ be found on the 

 nape of the neck, in the hair and on the back and chest. In removing 

 them care should be taken npt to leave their heads in the skin. 

 Covering them with kerosene, petrol, oil of turpentine, or carbolised 

 vaseline, or the application of the hot end of a cigarette will make them 

 loose their hold. 



