PLATE XVII. 



Fig. 



1. Piidiilopora clavata, p. 107. 



2. Me8e7deripora meandrina, p. 109. 



3. Fungella quadriceps, p. 119. 



4. ,, multifida, p. 119. 



5. Defrancia striatula, p. 117. 



6. Fungella i/ifundibulata, p. 120. 



