EXPLANATION OF PLATES 



(Figures represent the natural size of the specimens unless otherwise indicated 



ou the plates) 



Plate 1 



FiGTXBB 1. Olivella juspidea ffladecnsis, new subspecies. Holotype. 



2,6,7. Cypraea caroUnenHs floridana, new subspecies: 2, Back view of 

 holotype; 6, front view of paratype (U.S.N.M. No. 3T1334) ; 7, 

 front view of holotype. 

 3. Olivella tamiamiensis, new species. Holotype. 

 4,5. Gemma f new species? (U. S. N. M. No. 371345). A unique specimen 

 that is too small to determine the genus. 



Plate 2 



1 lorrBBS 1, 2, 3. Turritella cookei gladeensis, new subspecies: 1, Holotype; 2, 3, 

 paratypes (U. S. N. M. No. 371338). 

 4,5,7. Turritella pontoni, new species: 4, 5, Paratypes (U.S.N.M. No. 

 371336) ; 7, holotype. 

 6. Mitromorpha gunteri, new species. Holotype. 



Plate 3 



FiQUBES 1, 2, 3. Cardita {Carditamera) tamiamiensis, new species. Cotypes. 

 1, Exterior of smaller valve ; 2, 3, interior and exterior of 

 larger valve. 

 4, 5. Glycymeris lloydsmithi floridana, new subspecies. Holotype, 

 interior and exterior of same valve. 

 6. Cardita (Carditamera) arata Conrad. Exterior of left valve of 

 a large specimen, U.S.N.M. No. 371340. 



Plate 4 



FiGUBES 1, 3, 9. Cardium (Trachycarditim) ever gladeensis, new species. Holo- 

 type. 1, 3, Interior and exterior of same valve ; 9, character of 

 ornamentation on anterior side of outside. 

 2, 5. Venericardia (Pleuromcris) perplana gladeensis, new subspecies. 

 Holotype, exterior and interior of same valve. 

 4, 6, 7, 8. Parastarte martensi, new species. Cotypes. 4, 6, Same valve ; 



7, 8, same valve. 

 12 



U. ■. 60VERNMENT PRINTING OFFICE: \tti 



