BIOLOGICAL CLASSIFICATION. 1425 



Order PROPARIA. 

 Family ENCRINURID^E Angelin. 

 Cybeloides Slocom, Encrinurus Emmrich. 



Family CALYMENID^E Milne-Edwards. 



Calymene Brongniart, Calymenella Bergeron, Framinia Holtedahl, Homalonotua 

 Koenig, Synhomalonotus Pompeckj, Trimerus Green. 



Family CHEIRURID^E Salter. 



Anacheirurus Reed, Ceraurinus Barton, Ceraurus Green, Cheirurus Beyrich, Deiplion 

 Barrande, Heliomera Raymond, Meszkowskia Schmidt, Pliomerops Raymond, 

 Pseudosphserexochus Schmidt, Sphaerexochus Beyrich, Sphserocoryphe Angelin, 

 Staurocephalus Barrande. 



Family PHACOPID/E Corda. 



Chasmops McCoy, Dalmanites Barrande, Phacopidella Reed, Phacops Emmrich, 

 Pterygometopus Schmidt. 



UNPLACED GENERA. 



Anomocare Angelin, Anomocarella Walcott, Arionellus Barrande, Clelandia Coss- 

 man, Dolichometopus Angelin, Endymionia Billings, Goniurus Raymond, Holo- 

 metopus Angelin, Hungaia Walcott, Leiostegium Raymond, Lisania Walcott, 

 .Levisia Walcott, Leptoplastus Angelin, Lloydia Vogdes, Menocephalus Owen, 

 Pagodia Walcott, Ptychaspis Hall, Telephus Barrande, Thysanopyge Kayser. 



Class EUCRUSTACEA. 



Superorder BRANCHIOPODA. 



Order NOTOSTRACA. 



Eopteria Billings, Euchasma Billings, Ischyrinia Billings, Ribeirella Shubert and 

 Waagen, Ribeiria Sharpe, Technophorus Miller. 



Superorder OSTRACODA. 

 Family LEPERDITIID^E Jones. 



Aparchites Jones, Isochilina Ulrich, Leperditella Ulrich, Leperditia Roualt, Schmidt- 

 ella Ulrich. 



Family BEYRICHIID^: Jones. 



Aechmina Jones and Holl, Beyrichia McCoy, Bollia Jones and Holl, Ceratopsis Ulrich, 

 Ctenobolbina Ulrich, Dicranella Ulrich, Dilobella Ulrich, Drepanella Ulrich, 

 Eurychilina Ulrich, Halliella Ulrich, Jonesella Ulrich, Klredenella Ulrich and 

 Bassler, Kloedenia Jones and Holl, Macronotella Ulrich, Mesomphalus Ulrich and 

 Bassler, Moorea Jones and Kirkby, Placentula Jones and Holl, Primitia Jones and 

 Holl, Primitiella Ulrich, Scofieldia Ulrich and Bassler, Strepula Jones and Holl, 

 Tetradella Ulrich, Ulrichia Jones. 



Family THLIPSURID^E Jones. 

 Octonaria Jones, Thlipsura Jones and Holl. 



Family CYPRUS Zenker. 



Bairdia Bosquet, Bythocypris Brady, Cytheropsis McCoy, Krausella Ulrich, Macro- 

 cypris Brady, Pontocypris Sars. 



Family CYTHERELLID/E Sars. 

 Cytherella Jones, Cytherellina Jones and Holl, Pachydomella Ulrich. 



