PLATE XXXVII. 



Fig. I. Scinclc Lcana Dall ; Caloosahatchie beds: Ion. 54 mm.; p. 992. 



Fig. 2. Scinclc Lcana Dall, umbonal view ; p. 992. 



Fig. 3. Scinclc cltifoluiia Dall. Chipola beds: Ion. 54 mm.: p. 986. 



Fig. 4. Semelc pcrlamcllosa Heilprin ; Caloosahatchie Pliocene ; Ion. 54 mm ; p. 992. 



Fig. 5. The same, umbonal view ; p. 992. 



Fig. 6. Crassatcllitcs inclinus Conrad, variety incridiinmlis Dall ; Miocene of Alum 



Bluff, Florida ; Ion. 69 mm. 

 Fig. 7. Tellina scgrcgata Dall, left valve ; Ballast Point, Tampa Bay, silex beds ; Ion. 



17 mm. ; p. 1019. 



Fig. 8. The same, dorsal view ; p. 1019. 

 Fig. 9. Macoma Lyclli Dall, internal cast, showing impression of right valve; Miocene 



of Gay Head, Martha's Vineyard, Massachusetts : Ion. 43 mm. ; p. 1049. 

 Fig. 10. The same, umbonal view of another internal cast; Ion. 39 mm.; p. 1049. 

 Fig. ii. The same, internal cast showing impression of right valve of same specimen 



as figure 9 represents ; Ion. 43 mm. ; p. 1049. 



Fig. 12. dementia Grayi Dall; Oligocene of Oak Grove sands; Ion. 64 mm. 

 Fig. 13. Crassatellitcs inclinus Conrad, variety iticriilionalis Dall; Miocene of Alum 



Bluff, Florida ; same specimen as Figure 6, viewed dorsally ; Ion. 69 mm. 

 Fig. 14. Pecten Pannclcci Dall; Pliocene of San Diego, California; alt. 45 mm.; p. 708. 

 Fig. 143. The same, enlarged view of secondary sculpture. 



'193 



