TAB. XVII. 
1. Cyprzea Bowerbankii. No. 72, p. 129. 
a. Back view, shell from Highgate. 
4. Front view of the same. 
c. Back view, shell from Bracklesham Bay. 
d. Front view, ditto. 
2. Cyprza Prestwichii. No. 78, p. 134. 
a. Back view, natural size. 
6. Back view of the same, magnified. 
c. Front view of the same, ditto. 
3. Ovula? antiqua. No. 79, p. 136. 
a. Back view, natural size. 
b. Back view of posterior extremity, magnified. 
4, Cypreea Wetherellii. No. 77, p. 133. 
a. Front view, natural size. 
6. Back view of the same, magnified. 
c. Front view of the same, ditto. 
5. Cypreea tuberculosa, (Var. Coombii). No. 75, p. 131. 
Back view. 
6. Cypreea Bartonensis. No. 74, p. 130. 
a. Back view. 
b. Front view. 
“I 
. Cypreea platystoma. No. 76, p. 132. 
a. Back view of young shell, natural size. 
b. Back view of the same, magnified. 
Front view of the same, ditto. 
. Back view of adult shell, natural size. 
. Back view of the same, magnified. 
SSG yD 
Front view of the same, ditto. 
