PLATE 63 



1. Dentallum laqueatum Verrlll. 29 mm. p. 72. 



2. Dentallum ceratum Dall. Very young. 7 mm. 



3. Dentallum carduus Dall. 16 mm. p. 71. 



4. Dentallum gouldil obsciirum. 28 mm. p. 72. 



5. Cadulus quadrldentatus Dall, and outline of aperture. 10 mm. p. 73. 



6. Dentallum perlongum Dall, and outline of aperture. 80 mm. p. 72. 



7. Cadulus amlantus Dall. 5.75 mm. p. 73. 



8. Cadulus lunula Dall, and outline of aperture. 6 mm. p. 73. 



9. Cadulus aequalis Dall, and outline of aperture. 15 mm. p. 73. 



10. Dentallum callithrix Dall. 25 mm. p. 71. 



11. Cadulus acus Dall. 8 mm. p. 73. 



12a. Cadulus watsoni Dall, and outline of aperture. 20 mm. p. 73. 



12b. Dentallum callipeplum Dall. 36 mm. p. 71. 



12c. Cadulus agasslzii Dall, and outline of aperture. 9 mm. p. 73. 



18d. Cadulus cucurbita Dall, and outline of aperture. 4 mm. p. 73. 



