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Water-Mites from the Chelmsford
District
BY R. K. H. JONES
The water-mite or Hydracina comprise nine super-families of the
Order Acarina, grouped together because of their ecology rather
than for any phyletic relationships. In general their life-histories are
very complicated and few are known in detail. Like many of the smaller
animals their known distribution is really the distribution of collectors
rather than that of the mites.
On November 25th, 1916, C. D. Soar read a paper to the Essex Field
Club listing the water-mites found in Epping Forest (see Essex Natural-
ist, 18, p.96). As far as I can ascertain no other records of Essex