PLATE V. 



Page. 



Figure 1. Cryptoctenidia magna DaW, length 28 millimeters 30 



'2. Chnjsodoinns mesleri Dall, fragment showing back of penultimate whorl, diameter 33 millimeters. . . 28 



3. Chrysodoniiis mesleri Dall, basal fragment, height 32 millimeters 28 



4. Heinithyrls psittacea alaskana Dall, outside of pedicel valve, length 22.5 millimeters 34 



5. Heinithyris psittacea alaskana Dall, outside of ventral valve, diameter 23.5 millimeters 34 



6. Astarte diversa Dall, outside of left valve, length 18.5 millimeters 33 



7. Cyrtodaria camdenensis Dall, impression of interior of right valve, length 47 millimeters 33 



8. Cadulus arcticus Dall, magnified, length 7.5 millimeters 30 



9. Thais (Nucella) noyneana Dall, height 62 millimeters 29 



jO. Pyrulofitsns schraderi Dall, spire viewed from above, diameter 53 millimeters 29 



1 L. Chrysodoniiis leffingwelli Dall, height 73 millimeters 28 



12. Littorina palliata Say, magnified, diameter 12.5 millimeters 29 



13. Pyrulofusus schraderi Dall, profile, base defective, diameter GO millimeters 29 



14. Venericardia nuwokensis Dall, outside of right valve, magnified height 13 millimeters 33 



36 



