PLATE XXVIIl. 



Fig. 15. 



Fig. 16. 

 Fig. 17. 



Lucina {Milthd) caloosaensis Dall, right valve ; 55 mm. ; Pliocene. 



Diplodonta acclinis Conrad, interior of right valve ; from the Caloosahatchie 



beds ; 23 mm. 

 Lima caloosana Dall ; 33 mm. ; p. 767. 

 Muliiiia caloosa'hisis Dall, profile ; 22 mm. ; p. 902. 

 Spisula inarylandica Dall, interior of right valve ; 92 mm. ; p. 897. 

 Mtilinia caloosaensis Dall, dorsal aspect ; 22 mm. ; p. 902. 

 Muliiiia sapotilla Dall, interior of an elevated young right valve; 18 mm. ; 



p. 880. 

 Mulinia sa,potilla Dall, dorsal aspect ; 12 mm. ; p. 902. 

 Midinia sapotilla Dall, interior of adult left valve, showing elongation ; 29 



mm. ; p. 880. 

 Mactra {Mactrotoina) Willcoxii Dall, intei'ior of right valve ; 45 mm. ; p. 894. 

 Mactra {Mactrotoma) Willcoxii Dall, exterior of left valve ; 45 mm. ; p. 894. 

 Mactra {Micromactrd) imdiila Dall, interior of left valve ; 42.5 mm. ; p. 893. 

 Diplodonta acclinis Conrad, exterior of right valve ; 23 mm. 

 Mulinia sapotilla Dall, exterior of valve figured abo\'e at fig. 7 ; 18 mm. ; 



p. 902. 

 Mactra inultilineata Dall, exterior of left valve ; from the Caloosahatchie beds ; 



49 mm. 

 Donax Emmonsi'DzW, 1892; Miocene of North Carolina ; profile; 10 mm. 

 Donax ceqziilibrata Dall, 1892 ; Miocene of North Carolina ; profile ; 18 mm. 



923 



