PLATE IY. 
PUSTULOPORA. 
Diam. Page 
Figure 1. Pustulopora proboscidea, . . . . . . 19 
la, part of zoarium ; l6. official' dilatation, . . x 25 
„ 2. Pustulopora regularis, . . . . . . 21 
2a, terminal fork, . . . . . x 25 
„ 3. Pustulopora defiexa, ...... 20 
3a, bifurcation of zoarium, . . . x 25 
„ 4. Pustulopora proboscidioides, . . . . . 19 
4a, 46, two portions of the zoarium, . . . x 25 
