TABLE XV. 



Fig. 



1. a, b. Area turnescens, page 92. Mus. Edwards. 



2. a, b. „ interrupta, j». 85. „ 



3. „ eximia,jo. 83. „ 



4. a, b, „ impolita, p. 84. „ 



c. „ — ? var. Mus. Wetherell. 



5. a, b. „ nitens, p. 88. Mus. Edwards. 



6. a, b. „ Dulwichiensis,jo. 82. ,, 



7. a, b. „ Laekeniana, p. 80. „ 



c. „ — ; var. cylindrica. Mus. Fisher. 



8. a, b. „ laevigata, p. 86. Mus. Edwards. 

 c. „ — ; hinge greatly enlarged. 



9. a, b, ,, globulosa? p. 84 Mus. Edwards. 



c „ — ; hinge greatly enlarged. 



10. a, b. „ tegulata,jw. 90. Mus. Edwards. 



11. „ Websteri, p. 92. „ 



a. „ — ; ; outside view of a specimen with less elevated siphonal region. 



b, c. „ — ; outside and inside views of another specimen. 



12. a, b. „ Lyelli var. contorta,p. 87. Mus. Edwards. 



13. a, b. ,, — „ lamellosa. „ 



14. a, b. „ tessellata, p. 91. „ 



15. „ Dulwichiensis ? p. 82. Mus. Prestwich. 



The lines indicate the size of the specimens. 



