PLATE I. 



Fig. i. — Pentellina laevis, sp. nov., x 36. 

 a, b. — Lateral aspects. 

 c. — Oral aspect. 



FlG. 2. — Hauerina fragillissima, (Brady), x 73. Transverse section. 



FlG. 3. — Aschemonella catenata, (Norman), x 31. 



Jig. 4, 5. — Reophax plana, sp. nov., x 21. 

 4«. — Lateral aspect. 

 4b. — Oral aspect. 

 5. — Lateral aspect. 



FlG. 6. — Nouria polymorphinoides, Heron-Allen & Earland, x 18. 

 a, b. — Lateral aspects. 

 c- — Peripheral aspect. 



Fig. 7. —Nouria polymorphinoides, Heron- Allen & Earland, x 21. 

 a. — Lateral aspect. 

 b. — Peripheral aspect. 



Fig. 8. — Iridia diaphana, Heron-Allen & Earland, [?] x 25. 

 a. — Lateral aspect. 

 b. — Oral aspect. 



Fig. 9. — Haplophragmium tumidum, sp. nov., x 21. 

 a. — Lateral aspect. 

 b. — Peripheral aspect. 



Fig. 10. — Ammodiscus milioloides, (Jones, Parker & Kirkby), x 36. 

 a, b. — Lateral aspects. 

 c. — Peripheral aspects. 



