Plate 12. 
Page 
Figure 1. Pcctcn hindsii kincaidi Oldroyd.53 
Type specimen, Puget Sound. 
2. Pcctcn hindsii kincaidi Oldroyd.. 53 
3. Pec ten alas ken sis Dali. 63 
Bull. 112 U. S. N. M. 
4. Pcctcn islandicns pugetensis Oldroyd. 55 
Type specimen, Puget Sound. 
5. Pcctcn islandicns pftgctcnsis Oldroyd. 55 
6. Pcctcn vahcoiivercnsis Whiteaves. 60 
Bull. 112 U. S. N. M. 
7. Pcctcn Vancouver crisis Whiteaves. 60 
8. Pcctcn albidus DalL.. 52 
• Arnold, Tert. Pectens. 
9. Pcctcn albidus Dali. 52 
