

Plate 3. 



Fig. 

 << 



a 



u 



C( 



1. Ilyalonema pedunculatum. Micro-oxyhexact ; x 600. 



Macramphidisc ; x 400. 

 Micro-oxyhexact ; x 600. 

 Dermal pinule ; x 400. 



2. 



3. 



it 



a 



a 



a 



4. 



5. 



a 



a 



a 



a 



<c 



cc 



6. 



a 



u 



7. Regadrella delicata. 



u 



8. 



u 



te 



From a photograph. Lateral part of body sliced 

 away on one side ; \. 



■ 



Mesamphidisc ; x 600. 



Part of margin bounding oscular (sieve-plate) area, with 

 adjoining lateral body wall. Dermal surface. The 

 slender parenchymal diacts are represented, for the sake 

 of clearness, as less numerous than in nature ; x 14. 



Another part of upper margin, with adjoining lateral wall. 

 Dermal surface. Slender, parenchymal diacts omitted 

 except near margin, and there represented as less numer- 

 ous than in nature ; x 45. 











