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 3800. 
7, 8. A young state (?) of this species. x 300. 
All from ponds in Cheshire. 
