PLATE ^T:. 



Figure 1. Astarte carteriana Dall, exterior of left valve, length 36 millimeters 31 



2. Pecten (Chlamys) hindlei Dall, exterior of young left valve, height 56 millimeters 30 



3. Astarte carteriana Dall, interior of left valve, length 36 millimeters 31 



4. Astarte actis Dall, interior of right valve, length 37 millimeters 31 



5. Astarte actis Dall, exterior of left valve, length 37 millimeters 31 



6. Astarte leffingivelli Dall, exterior of left valve, length 31.5 millimeters 32 



7. Pecten ( Chlamys) kindlei Dall, exterior of adult right valve, height 91.5 millimeters 30 



8. Astarte leffingweUi Dall, interior of left valve, length 31.5 millimeters .• 32 



9. Astarte hemicymata Dall, exterior of (broken) left valve, not quite mature, length 17 millimeters 32 



10. Astarte hemicymata Dall, interior of same valve 32 



11. Macoma middendorffii Dall, interior of right valve, height 46.5 millimeters 33 



12. Astarte martini Dall, length 27.5 millimeters 32 



13. Macoma middendorffii Dall, exterior of right valve, height 46.5 millimeters 33 



37 



