PLATE XII. 



Nuclearia delicatula Cienk. (p. 109) 



Fias. 



1, 2. Views of a single individual. Fig. 1. Resting phase. 



Fig 2. Body extended and in active movement. 

 Each x 450. 

 3, 4. Resting (3) and active (4) phases of another individual. 



x 300. 

 5, 6. Resting (5) and active (6) phases of another individual. 



x 300. 

 7, 8. A young state (?) of this species. X 300. 



All from ponds in Cheshire. 



