Plate IX. 



XI. Abyssal southern borderland basins and lower slope, 

 1,800 to 4,122 meters. 

 Fig. 



1. Chitinous gastropod (?). A. Aperture, B. Back, size - 50 ;•; 35 mm. 



2. Solariella ceratophora Dall, 1896. Aperture, size -21 x 19 mm. 



3. Solariella eqiiatorialis Dall, 1908. Aperture, size - 23 x 20 mm. 



4. Fusinus nifocaiidatus Dall, 1896. Aperture, size - 40 x 1 1 mm. 



5. Tradolira sparta Dall, 1896. Aperture, size - 19 ■ 9 mm. 



6. Pleurotomella clarinda Dall, 1908. Aperture and animal, size - 67 ■ 29 mm. 



7. Steiraxis anlaca Dall, 1896. Aperture, size -52 >: 21 mm. 



8. Turris (Gemnmla) sp. (see Dall, 1889). Aperture, size -42 x 29 mm. 



9. Solemya agasski Dall, 1908. A. Exterior, B. Interior, size- 42 x 18 mm. 



10. Nucula panamina Dall, 1908. A. Exterior, B. Interior, size- 15 x 10 mm. 



11. Nuciilana agapea (Dall, 1908). A. Exterior, B. Interior, size -21 > 12 mm. 



12. Tindaria compressa Dall, 1908. A. Exterior, B. Interior, size - 10 >: 8 mm. 



13. Limopsis compressus Dall, 1908. A. Exterior, B. Interior, size - 29 x 20 mm. 



14. Area eorpulenta pompholynx Dall, 1908. A. Exterior, B. Interior, size - 25 x 29 mm. 



15. Area cf. mieleator Dall, 1908. A. Exterior, B. Interior, size- 14 x 15 mm. 



16. Abra profundorum E. A. Smith, 1885. Exterior (Broken, whole), size - 20 x 13 mm. 



17. Cuspidaria panamensis Dall, 1908. Exterior, size - 42 x 25 mm. 



18. Myonera garretti Dall, 1908. Exterior, size -21 x 15 mm. 



19. Poromya perla Dall, 1908. Exterior (whole), size - 18 x 17 mm. 



