632 THE PALEONTOLOGY OF MINNESOTA. 



LOlassification of Ostraooda, 



PROVISIONAL CLASSIFICATION OF THE PALEOZOIC OSTRACODA. 



Family LEPERDITIID^. 



Genera: Leperditia, Renault; Leperditella, Ulrich; Isoehilina, Jones; Aparchites, Jones; Schmidtella, Ulrich; 

 ? ^chmina, Jones. 



Family BEYRICHIID^. 



Gekeba: Beyrichia, McCoy; Beyrichiella, Jones and Kirkby; Beyrichiopsis, Jones and Kirkby; Kloedenia, 

 Jones and Holl; Ulrichia, Jones; Primitia, Jones and Holl; Primitiopsis, Jones; EuiycMlina, 

 Ulrich; J) jcroweMa, Ulrich; Halliella, Ulrich; Jonesella, Ulrich; BolUa, Jones and Holl; Cteno- 

 bolbina, Ulrich; Tetradella, Ulrich; Drepanella, Ulrich; Placentula, Jones and Holl; KirJcbya, 

 Jones; Moorea, Jones and Kirkby; Strepula, Jones and Holl; Macronotella, Vlnch; Primitiella, 

 Ulrich; Dilobella, Ulrich, 



Family BARYCHILINID.^. ' • 



Genera: Barychilina, Ulrich; Kyammodes, Jones. 



Family BNTOMID^. 

 Genera: Untomis, Jones; Elpe, Barrande; Entomidella, Jones; ? Hippa, Barrande. 



Family CYPEIDINID^. 



Genera: Cypridina, Milne-Edwards; Cypridinella, Jones; CypridelUna, Jones; Suleuna, Jones; Cypridella, 

 DeKoninck; Cyprella, DeK.; Bradycinetus, Sars ; Philomedes, Lilljehorg; Bhombina, J.; 

 Gyprosis and Oyprosina, Jones. 



Family ENTOMOCONCHID^. 

 Genera: Entomooonchus, McCoy; Offa, Jones. 



Family POLYCOPIDJE. 

 Genus: Polycope, Sars. 



Family OYTHERELLIDiE. 

 Genus: Cytherella, Jones and Bosquet. 



Family CYTHERID^. 

 Genera: Cythere, Miiller; Bythoaythere, Sa.is; Carbonia, Jones; f Youngia, Jones and Kirkby; Xestoleberis, 

 Sars. 



Family THLIPSURID^. 

 Genera: Thlipsuva, Jones and Holl; Phreatura, Jones and Kirkby; Oettinaria, Jones. 



Family CYPRID^. 



Genera: Aylaia, Brady; Candona, Balrd; Argilloecia, Sars; Maorocypris, Brady; Bythocypris Brady; Bairdia, 

 McCoy; Pontocypris, Sars; Pachydomella, Ulrich. 



Family BEECH EEELLID^, 

 Genera: Beecherella, Ulrich; Krausella, Ulrich. 



Family DARWINULID.^. 

 Genus: 'Darwinula, Jones (Brady and Kobertson). 



NOT CLASSIFIED. 



Cytherellina, Jones and Holl ; Bursulella and Bernix, Jones; Lepiditta, Lepidilla, Beyrichona 

 and Hipponicharion, Mathews; Isoxys, Walcott, 



