246 Bulletin 29 410 



8. Pyramidella Olssoni, n. sp., Ion. 10 mm: 145 



9. Pyramidella (Callolongchasus) cercadensis, n. sp., Ion. 4.25 



mm 146 



10. Pyramidella (Orinella) Arionis, n. sp.. Ion. 3.25 mm 146 



11. Turbonilla (Chemnitzia) Ogilvieas, n. sp., Ion. 6.5 mm 147 



12. Turbonilla (Chemnitzia) yaquensis, n. sp., Ion. 3.60 mm 147 



13. Turbonilla (Chemnitzia) cercadensis, n. sp., Ion. 2.5 mm 148 



14. Turbonilla (Strioturbonilla) dominicensis Gabb, Ion. 6 mm... 148 



15. Turbonilla (Pyrgiscus) Karlschmidti, n. sp., Ion. 8 mm 149 



16. Turbonilla (Pyrgiscus) Olssoni, n. sp., Ion. 9.5 mm 149 



17. Turbonilla (Pyrgiscus) turritissima Guppy, Ion. 7 mm 149 



18. Turbonilla (Pyrgiscus) riomaoensis, n. sp., Ion. 6.5 mm 150 



19. Turbonilla (Visma) turritelloides Gabb, Ion. 8 mm 150 



20. Turbonilla (Mormula) Nanniebellae, n. sp., Ion. 7.25 mm 150 



21. Odostomia Sancti-Dominici, n. sp., Ion. 2.5 mm 151 



22. Odostomia yaquica, n. sp., Ion. 3.50 mm 151 



Plate 26. 



Page 

 Fig. 1. Dentalium dissimile Guppy, Ion. 47 mm 15S 



2. Dentalium dissimile ponderosum Gabb, Ion. 60 mm 158 



3. Dentalium Cossmannianum P. and S., Ion. 26 mm 159 



4. Dentalium glaucoterrarum, n. sp., Ion. 23 mm 159 



5. Cadulus phenax P. and S., Ion. 6 mm 160 



6. Cadulus elegantissimus P. and S., Ion. 14 mm 160 



7. Cadulus denticulus-tigris, n. sp., Ion. 6.25 mm 160 



8. Nucula tenuisculpta Gabb, Ion. 4 mm 161 



9. Leda peltella Dall, Ion. 8 mm 161 



10. Limopsis ovalis Gabb, Ion. 8.5 mm 162 



11. Limopsis hatoviejonis, 11. sp., Ion. 7 mm 162 



12. Glycimeris acuticostata Sowerby 180 



13. Glycimeris jamaicensis Dall 181 



14. Pteria inornata Gabb 181 



15. Anomia simplex d'Orbigny 191 



16. Modiolus cercadicus, n. sp., Ion. 5 mm 192 



17. Modiolus maonis, n. sp., Ion. 8 mm 192 



18. Crenella divaricata d'Orbigny, Ion. 2.25 mm 194 



19. Pandora inconspicua Gabb, Ion. 8mm 195 



19a. Pandora inconspicua Gabb 195 



20. Cuspidaria islahispaniolse, n. sp., Ion. 9 mm 196 



21. Crassinella Guppyi Dall, Ion. 5 mm 197 



22. Amusium papyraceum Gabb 190 



