Plate 11. 



Page. 



Fig. 1. Dentalium semistriolatum Guilding. 29.5 mm 69 



2. Dentalium semistriolatum Guilding. 31.5 mm 69 



3. Dentalium semistriolatum Guilding. Detail of apical portion 69 



4. Dentalium amaliense, new species. 13 mm 71 



5. Dentalium am/iliense, type, 16 mm 71 



6. Dentalium eboreum Conrad. 19 mm 66 



7. Dentalium circumcinctum Watson. 48 mm. Copy of Watson's figure. . 68 



8. Dentalium semistriolatum Guilding. Detail in median portion 69 



9. Dentalium semistriolatum Guilding. Detail in anterior portion 69 



162 



