176 G. P. DEELEY ON THREE WATER-MITES NEW TO BRITAIN. 



F 



Explanation of Plate 13. 



g. la. Thyopsis cancellata $ , dorsal surface. 

 lb. „ „ ventral „ 



lc. „ „ genital area. 



2a. Sperchon glandulosus $ , dorsal surface. 

 2b. ,, „ ventral „ 



2c. „ „ genital area. 



2d. „ „ palpus. 



3a. Lyania bipapillata $ , ventral surface. 

 36. „ ,, dorsal „ 



Journ. Quekett Microscopical Club, Ser. 2, Vol. A'., No. 61, November 1907. 



