PLATE V. 



PAGE. 



Fig. 1. HOLOCYSTITES BRAUNi— Natural size. Side view, 130 



Fig. 2. HOLOCYSTITES WETHERBYi — Anterior view, 131 



2a. Summit view, with anterior side down. M, mouth. A, ambulacral orifice. 

 2b. Magnified view of what is supposed to be an arm, that is to be seen on 

 2a, by the side of the ambulacral orifice. 



Fig. 3. HOLOCYSTITES ORNATUS — Posterior view, 132 



3a. View of the base, showing the form of the plates, and the fiattened ante- 

 rior side, part of Avhich is due to compression. 

 36. Summit view. M, mouth. P, anal aperture. 



Fig. 4. HOLOCYSTITES PERLONGUS — Posterior view, 132 



4a. Summit, bringing the anterior part more into view than the posterior. M, 

 mouth. 



Fis. 5. HOLOCYSTITES GLOBOSUS — Anterior view . 133 



5a. Posterior view. 

 ob. Summit view. M, mouth. 

 Fig. 6. The root of a HOLOCYSTITES showing its crude branches. 

 Fig. 7. Part of the jilate of a column, showing the fine lines which radiate from 

 the center to the circumference. 



