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KiNOSHiTA (S.). Chosen-san Kiuketsu-sei Culicoides ni tsuki te. [On 

 a Korean blood-sucking Culicoides.] — Dohutsugaku Zasshi 

 [Zoological Magazine], Tokyo, xxx, no. 354, April 15th 1918, 

 pp. 155-160, 1 fig. 



At Moppo, in Korea, there occurs a small blood-sucking Dipteron, 

 the attacks of which not only cause swelling of the affected part, but 

 also give rise to fever, especially in young children. As it is very 

 small, an ordinary mosquito net does not afford protection from it. 

 It belongs to the family Chironomidae, and is a new species, 

 which the author describes in detail under the name Culicoides niiharai. 

 The complete life-cycle is not yet known, but it appears twice a year 

 in large numbers, first during June and secondly from August to the 

 middle of September. In the towns it attacks man towards evening, 

 but in the field throughout the day. It occurs chiefly along the sea- 

 shore or riverside, so that it is not improbable that the larva is a 

 mud-dweller in tidal areas. 



Sanborn (C. E.) & Painter (H. R.). The Chicken Tick {Argas 

 miniatus, Koch). — Agric. Expt. Sta., Stillwater, Oklahoma, Bull, 

 no. 118, May 1918, 8 pp., 3 plates. [Received 19th September 

 1918.] 



Argas persicus (miniatus) (chicken tick) is dealt with at length 

 in this bulletin, which, however, contains no new information except 

 records of the experimental exposure of these ticks to extremely 

 low temperatures, which have little or no eft'ect upon them. 



Hill (B. J.). Note on the Analysis of Soda-Sulphur Dips. — S. African 

 Jl. Sci., Capetoivn, xiv, no. 11, June 1918, pp. 474-476. 

 [Received 12th September 1918.] 



One of the many soda-sulphur concentrates sold m South Africa 

 for use as a sheep-dip for the eradication of scab, is described as lime- 

 sulphur dip, although calcium is practically absent. Since sodium 

 polysulphide is just as valuable as calcium polysulphide (if not more 

 so) in the treatment of scab, nothing is to be gained by such confusion 

 of specification. 



Carbonate, hydroxide, and polysulphide (tetra or penta) can co-exist 

 in solution without immediate interaction. A little carbonate is 

 therefore of no consequence in a freshly-made dip, but it is possible 

 that on prolonged storage, a slow reaction with polysulphide may take 

 place with possible formation of depilatory hydrosulphide. This 

 point however has not yet been specifically investigated. 



In reporting upon the efficacy of a soda-sulphur concentrate in 

 relation to the eradication of scab, the content of polysulphide sulphur 

 should be made the basis of calculation. Other constituents, such 

 as thiosulpliate, are of negligible parasiticidal importance, and need 

 not be considered in evaluation. The dilution recommended for 

 tank strength should be such that the polysulphide does not fall below 

 0"6 to 0*7 per cent. 



