PLATE XLIV. 



Sportella yorkensis Dall ; 7.0 mm.; Miocene of Virginia; p. 1130. 

 Montacuta actinophora Dall; ii.o mm.; Oligocene of Florida; p. 1172. 

 Erycina carolincnsis Dall; 7.0 mm.; Miocene of North Carolina; p. 1145. 

 Montacuta cliipolana Dall; 8.5 mm.; Oligocene of Florida; p. 1171. 

 Semelina cythereoidea Dall ; 5.0 mm. ; Oligocene of Florida ; p. 994. 

 Montacuta sagrinata Dall; 7.5 mm.; Miocene of Virginia; p. 1174. 

 Erycina plicatula Dall; 9.5 mm.; Claibornian ; adult with feeble sculpture; 



p. II43- 

 Aligena minor Dall; 3.0 mm.; Miocene of North Carolina; p. 1177. 

 Sportella lubrica Dall; 5.0 mm.; Oligocene of Florida; p. 1127. 

 Sportella pelex Dall; 7.^, mm.; Miocene of Virginia; p. 1131. 

 Diplodonta radiata Dall, interior of left valve and profile of teeth; 19.0 mm.; 



Oligocene of Florida; p. 1184. 

 Erycina plicatula Dall; 6.0 mm.; young shell with strong sculpture; p. 1143. 

 Sportella unicarinata Dall ; 5.5 mm. ; exterior of adolescent valve, showing 



carina and prominent prodissoconch ; Oligocene of Florida; p. 1127. 

 Petricola calvertensis Dall; 17.5 mm.; Miocene of Maryland; p. 1060. 

 Erycina cliipolana Dall; 4.1 mm.; Oligocene of Florida; p. 1144. 

 Diplodonta caloosacnsis Dall; 27.0 mm.; Pliocene of Florida; p. 1188. 

 Diplodonta (Felaniella) minor Dall, interior of right valve and profile of teeth; 



4.5 mm.; Oligocene of Bowden, Jamaica; p. 1183. 

 Sportella obolns Dall, interior of right valve and profile of teeth ; 4.5 mm. ; 



Oligocene of Florida; p. 1126. 

 Diplodonta alta Dall; 27.0 mm.; Chipolan Oligocene; p. 1183. 

 Donax cliipolana Dall; 9.5 mm.; Chipolan Oligocene; p. 966. 

 Erycina {Pseudopytliina) aniericana Dall; 16.0 mm.; Miocene of Maryland; 



p. 1 146. 

 Erycina carolin-ensis Dall; 13.25 mm.; Pliocene of South Carolina; p. 1145. 

 Aligena lineata Dall; 7.5 mm.; Oligocene of Oak Grove, Florida; p. 1176. 

 Sportella lioconcha Dall; 14.0 mm.; Oligocene of Oak Grove, Florida; p. 1128. 

 Erycina (Pscndopythina) aniericana Dall, 16.0 mm.; interior; Miocene of 



Maryland; p. 1146. 



