Plati£ VIII. 



X. Middle slope, 731 to 1,799 meters. 

 Fig. 



1. Cocculina diomedca Dall, 1908 (?). Exterior, size -9 .-; 6 mm. 



2. Turcicula bairdii Dall, 1889. Aperture, size - 44 x 41 mm. 



3. Solariella nuda Dall, 1896. Aperture, size - 10 x 13 mm. 



4. Solemya agassizi Dall, 1908. A. Exterior, B. Interior, size -42 x 18 mm. 



5. Vesicomya lepta Dall, 1896. A. Exterior, B. Interior, size -45 x 33 mm. 



XII. California borderland basins, 1,641 to 2,358 meters. 



6. Coins halidonus Dall, 1919. Aperture, size -34 x 20 mm. 



7. Coins of. halli Dall, 1873. Aperture, size - 34 x 20 mm. 



8. Coins trophius Dall, 1919. Aperture, size - 29 x 16 mm. 



9. Ancistrolepis magnus Dall, 1894. Aperture, size - 60 x 46 mm. 



10. Buccimim diplodetum Dall, 1907. Aperture, size - 16 x 11 mm. 



1 1. Chrysodomus liratus Martyn, 1784. Aperture, size - 67 x 37 mm. 



12. Antiplanes vinosa Dall, 1874. Aperture, size - 27 ■' 13 mm. 



13. Solemya of. johnsoni Dall, 1891. A. Exterior, B. Interior, size - 65 ■ 30 mm. 



14. Malleliafaba Dall, 1897. A. Exterior, B. Interior, size- 18 x 11 mm. 



15. Cyclopeden randolphi tillamookensis (Arnold, 1906). Exterior, size - 23 x 23 mm. 



16. Chlamys latiaurata monotimeris (Conrad, 1837). Exterior, size - 23 x 23 mm. 



17. Vesicomya stearnsi Dall, 1895. A. Exterior, B. Interior, size - 45 ~- 33 mm. 



