370 .. D. BOAB ON THE LIFE-HISTORY OF FRESH-WATER MITES. 



,/. I ..-ii \ ae of Hydrachna globosa. 



Nymph of same. 

 ,\ Adult form. Legs not shown. 



Plate 30. 



a. Spongidafluviatilis. 



Larval form of Atax crassipes. Legs not drawn. 

 c. Nymph form of same. Legs not drawn. 



Adult form of same, 6 . 



topical Club, Scr. 2, Vol. IX. , No. 59, November 1906. 



