TRANSACTIONS OF MICEOSCOPICAL SOCIETY. 
DESCRIPTION OF PLATE IX, 
Illustrating Dr. Greville's paper on New Diatoms, Series III. 
Tig. 
1. — BrighUoellia elahorata. 
2, 3. — Triceratium notabilis. 
4. — T. microcephalum. 
5. — T. insignis. 
6. — T. rotundatum. 
7. — T. amcenum. 
8. — T. obscurim. 
9. — T. Harrisoniamm. 
10. — T. giganieum. 
11. — Amphitetras minuta. 
All the figures are X 400 diameters. 
