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THE MITES KNOWN AS RHAGIDIA. 
‘ C. F. GEORGE, M.R.CS., 
Kirton-in-Lindsey. 
THE only account of these mites that I have met with is to be 
found in the ‘ Treatise on the Acarina,’ by Nathan Banks, 
page 14. He says that ‘ Rhagidia is a remarkable genus. 
The species are pale or whitish in colour, and occur under damp 
fallen leaves, and on moist soil. Its structure is in many 
ways very similar to that of certain Solpugida and suggested 
Rhagidia sp. 
Fig. 1.—The mite. X 15. 
., 2.—Two terminal joints of leg with claws and hair-pad,. 
,, 3.—Mandibles. 
,, 4.—Setose hair. 
to Thorell its generic name, which is a diminutive of Rhax, a 
genus of the Solpugida. It is probable that it is the most 
primitive of all existing mites’ and points to the close relation- 
ship of the Acarina to the Solpugida. Our common species, 
R. pallida Banks, is found throughout the country, but more 
commonly in the north. Other species are found in Europe, 
Naturalist, 
