PLATE 5 

 Conocardium incarceratum Clarke 



Pane 37 



i, 2 Enlarged views showing the character of the sculpture, x 3 

 3 Cross-section of the shell showing the projecting vertical lamellae 

 4, 5 Valves of other specimens 



Carydium gregarium Beushausen 



(See plate 33) 

 Page 33 



6-12 A series of illustrations all x 2 except figure 8 



Carydium elongatum Clarke 



Page 33 



J 3 -I 7 Shells of this species natural size, except figures 13 and 15, x 3 



Mytilarca dalhousie Clarke 



Page 30 



18, 20 Interior and exterior of the same shell 



19 Enlargement of hinge 



21, 22 Exteriors of other specimens 



Grammysia sp. 



23 Sculpture cast of a large obscure shell of this genus 



176 



