388 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



LIST OF ROTATORIA FOUND IN THE DISTRICT OF COLUMBIA, MARY- 

 LAND, AND VIRGINIA. 



Order PLOIMA. 



Notommata anritn (Miiller). 



Notommata brachyota Ehrenberg. 



Notommata caudala Collins. 



Notommata cerberus (Gosse). 



Notommata contorta (Stokes) =Diglma contorta Stokea. 



Notommata copetis Ehrenberg. 



Notommata cyrtopns Gosse. 



Notommata melandocns (Gosse) = Fiircularia melandocus Gosse. 



Notommata najas Ehrenberg. 



Notommata pachyura (Gosse) = Co peas pachyunis Gos8e= Copeus triangulatus Kirkman. 



Notommata pseudoccrberus de Beauchamp. 



Notommata saccigera Ehrenberg. 



Notommxila silpha (Gosse) = Notommata forcipala of Gosse, not Ehrenberg, =Dt'5riena 



silpha Gosse. 

 Notommata torulosa (Dujardin). 

 Notommata tripus Ehrenberg. 

 Taphrocampa annulosa Gosse. 

 Taphrocampa clavigcra Stokes. 

 Taphrocampa seleniira Gosse. 

 Proales dedpicns (Ehrenberg). 

 Pleurotrocha petromyzon (Ehrenberg). 

 ? Pleurotrocha sordida (Gosse) == Proales sordida Gosse. 

 Eosphora elongata Ehrenberg. 



Cephalodella catellina (Mul\eT)=Diglena catellina (Muller). 

 Cephaloddlaforficula (EhrenheTg) = FurculariaforJicvla Ehrenberg. 

 Diaschiza auriculata (MnWer) =Diaschiza lacinulata (Muller). 

 Diaschiza eva (Gosse). 

 Diaschiza exigua Gosse. 



Diaschiza forficata (Y?axenherg)= Diaschiza cxca (Gosse). 

 Diaschiza gibba (Ehrenberg). 

 Diaschiza globata Gosse. 

 Diaschiza gracilis (Ehrenberg). 

 Diaschiza megalocephala (Glasscott). 

 Diaschiza sterea (Gosse). 

 Diaschiza tenuior Gosse. 

 Rousseletia comiculata, new species. 



Monommata orbis (Mu\\eT) = Fnrcularia longiscta (Muller). 

 Dicranophoms auritus (Ehrenberg) = Eosphora aurita (Ehrenberg). 



Dicranophorus fordpatus (MuWer) = Diglena forcipata (Muller) . 



'? Dicranophoms grandis (Ehrenberg) =Diglma grandis Ehrenberg. 



Encentrum aper, new species. 



Encentrum myriophylli, new species. 



Encentrum ricdse, new species. 



Diglena caudata Ehrenberg^Diglena biraphis Gosse. 



Dighna clastopis Gosse. 



Diglena pemioUis Gosse. 



Proales felis (M uller) . 



Taphrocampa saundersix Hudson. 



Theorus undnatus Ehrenberg. 



