Plate 40. 
Page 
Figure 1. Pectcn latiauritus var. monotimeris Conrad.. 57 
Conrad’s type figure. Jour. Acad. Nat. Sci., Pliila.* vol. 7. 
2. Pecten latiauritus monotimeris Conrad. 57 
Conrad’s type figure. Jour. Acad. Nat. Sci., Phila., vol. 7. 
3. Pteria sterna Gould. — 48 
La Paz. 
4. Leda collisoni Dali.-. . 26 
Canadian Arctic Exp., 1918. 
5. Leda collisoni Dali.. 26 
Canadian Arctic Exp., 1918. 
6. Periploma sulcata Dali.. 83 
Bull. Mus. Comp. Zool., vol. 43. 
7. Macoma oneilli Dali.173 
Sci. Res. Canadian Arctic Exp., vol. 8, pt. 20A. 
8. Glycymeris subobsoleta Carpenter. 42 
Puget Sound. 
9. Glycymeris subobsoleta Carpenter. 42 
Puget Sound. 
10. Solemya vdlvulus Carpenter. 11 
Lower California. 
11. Solemya agassizii Dali.. 9 
Bull. Mus. Comp. Zool., vol. 43. 
