EXPLANATION OF PLATE IX 



EOCENE FOSSILS 



FIG. i. Mesodesma alaskensis Dall ; length 29.0 mm. ; p. 108. 



2. Nucula (Aci7a) decisa Conrad, internal cast, elongated by 



pressure ; length 30.0 mm. ; p. 105. 



3. Crepidula precursor Dall ; length 13.0 mm. ; p. no. 



4. Toldia palachei Dall ; length 29.0 mm. ; p. 104. 



5. Toldia bretveri Dall ; height iS.o mm. ; p. 10=;. 



6. Margarites peninsularis Dall; height 12.0 mm. ; the basal 



part of this specimen is imbedded in a very hard matrix ; 

 p. no. 



7. Modiolus harrimani Dall; length 19.0 mm. ; p. 106. 



8. Toldia enter son ii Dall ; length 18.5 mm. ; p. 104. 



9. Spisula callistceformis Dall; length 50.0 mm. ; p. 108. 



10. Macrocallista ( Chionella?} gilberti Dall ; length 42.0 mm. ; 

 p. 107. 



