348 



PLATE III 



Fig. 1. Portion of fine pseudopodium, during life, of Polystomella. 



Fig. 2. The same of Cormtspira. 



Fig. 3. The same of Discorbitia. 



Fig. 4. Thicker pseudopodial stem of a living Eotalina, with a very distinct 

 fibrous alveolar structure. 



Fig. 5. Small Acineta (see the text, p. 87) from fresh water. Living. The 

 structure of the protoplasm only partly filled in. g, the Avail of the 

 envelope ; alv, alveolar layer ; mn, macronucleus ; cv, contractile vacuole 

 with the very distinct efferent canal ; x, dark bodies in the protoplasmic 

 framework. 



