Plate XIV. 



(All the specimens are in the collection of the Museum of Comparative ^ 

 Zoology at Cambridge.) 



British Species of Clavilithcs. ■ 



Page. \ 



Figs. I. Clavilithes deformis, young (27765) 120 



2. Clavilithcs egregius, British type (27793) 123 



3 and 4. Clavilithes deformis, young like Fig. i (27765) 120 



5 and 6. Clavilithes solanderi, a young and a submature specimen 



(Hampshire, 27765) (1058) 123 



7. Clavilithes parisiensis, British form (27768) 121 



8. Clavilithes longcevus ( 1063) 126 



9. Clavilithes parisiensis, British form, showing strong senile characters 



(27767) 121 



(184) 



