882 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxi. 



Genus CYCLADELLA Carpenter. 

 33. Cycladella papyracea Carpenter, 1865; Mazatlan. 



The only kiiowu perfect specimen is inaccessible in the Hanley collection. The 

 shell is possibly the nepionic young of CoopereUa or dementia. 



C— TERTIAEY SPECIES OF THE UNITED STATES. 



Genus SOLECARDIA Conrad. 



Subgenus SPANIORINUS DaU. 



1. Solecardia clarl'eana Aldricli; Chickasawan. 



2. Solecardia alabaniiensis Cossmanu; Claiboniian. 



3. Solecardia oblonga Gonvsid; Vicksburgian. 



4. Solecardia cossmanni Dall; Miocene, Virgiuia. 



Genus SPORTELLA Deshayes. 



5. Sportella ohlonga Aldrich, 1897 ; Chickasawan. 



6. Sportella gregorioi Cossmanu, ISM; Claibornian. 



7. Sportella alabamensis Aldrich, 1897; Claibornian. 



8. Sportella oholus Dall; Oligocene, Florida. 



9. Sportella unicarinataJ)2k\\; Oligocene, Florida. 



10. Sportella Inhrica DsiW-, Oligocene, Florida. 



11. Sportella lioconcha Dall; Oligocene, Florida. 



12. Sportella lohitfieldi Dall; Miocene, IS^ew Jersey and Maryland. 



13. Sportella constricta Conrad, 1803; Miocene and Pliocene. 



14. Sportella protexta Conrad, 184:1 ; Miocene and Kecent. 



15. Sportella petropolitana Dsdl; Miocene, Virginia. 



16. Sportella compressa H. C. Lea; Miocene, Pliocene. 



17. Sportella yorkensis Dall; Miocene, Virginia. 



18. Sportella recessa Glenn; Miocene, Maryland. 



19. Sportella pelex Dall; Miocene, Virginia and Maryland. 



Genus ANISODONTA Deshayes. 



Section BASTEROTIA Mayer. 



20. Anisodonta howdeniana Dall; Oligocene, Jamaica. 



Section FUICRELIA Cossmann. 



21. Anisodonta elliptica Recluz ?; Miocene to Kecent. 



Section ANISODONTA s. s. 



22. Anisodonta americana Dall; Pliocene, Florida. 



Genus HINDSIELLA Stoliczka. 



23. Hindsiella faba O. Meyer, 1886 ; Claibornian. 



24. Hindsiella donacia DaU; Claibornian. 



25. Hindsiella nephritica Dall; Oligocene, Florida. 



26. Hindsiella carolinensis Dall; Miocene, North Carolina. 



27. Hindsiella acuta Dall; Miocene, North Carolina and Maryland. 



