SYNOPSIS OF THE BOTATORIA. 



CLASSIFICATION OF THE ROTATORIA. 



Owing to the complete absence of paleontological records, the 

 classification of the Rotatoria is a rather difficult problem. The 

 phylogeny must be reconstructed by a comparative study of each 

 single organ throughout the entire family or genus; no single species 

 is known that still retains an unquestionably primitive organization. 

 A Notommata has what is generally considered the simplest type of 

 corona, but the mastax is highly specialized; on the other hand, an 

 EpipJianes has the most primitive mastax, but the corona and all 

 other organs have undergone profound changes. In the light of 

 this, the subjoined arrangement must be considered tentative only 

 and subject to change as more information becomes available. 



Order PLOIMA. 



Family NOTOMMATID^. 

 Subfamily Notommatin^. 

 Genus Notommata. 

 Taphrocampa. 

 Proales. 

 - Pleurotrocha. 

 Eosphora. 

 Cephalodella. 

 Diaschiza. 

 Monommata. 

 Subfamily Dicranophorin^. 

 Genus Dicranophorus. 

 Arthroglena. 

 Encentrum. 

 Albertia. 

 Balatro. 

 Drilophaga. 

 Enter oplea. 

 Family EPIPHANID^. 

 Genus Epiphanes. 

 Rhinoglena. 

 Cyrtonia. 

 Proalides. 

 Family MICROCODONID^. 

 Genus Microcodon. 

 Mikrocodides . 

 Family BRACHIONID^. 

 Genus Brachionus. 

 Schizocerca. 

 Platyias. 

 Keratella. 

 Notholca. 

 Anurxopsis. 

 Family MYTILINID^. 



Genus Mytilina. 



Family EUCHLANID^. 



Genus Euchlanis. 



Dipleuchlanis. 

 Diplois. 



Family EUCHLANID^— Contd. 

 Genus Lecane. 



Monostyla. 

 Family LEPADELLIDJi:. 

 Genus Lepadella. 

 Colurella. 

 Squatinella. 

 Family TRICHOTRIIDJ}. 

 Genus Trichotria. 



Macrochsetus . 

 Scaridium. 

 Family TRICHOCERCID^. 

 Genus Trichocerca. 

 Diurella. 

 Elosa. 

 Family CHROMOGASTRID^. 



Genus Chroviogaster. 

 Family GASTROPODIDJE. 

 Genus Gastropus. 



Ascoviorpha. 

 Family SYNCH^TIDiE. 

 Genus Synchxta. 



Parasynchseta. 

 Family POLYARTHRID^. 

 Genus Polyarthra. 

 Anarthra. 

 Family SPHYRID^. 



Genus Sphyrias. 

 Family PLCESOMID^. 



Genus Plcesoma. 

 Family ASPLANCHNID^. 

 Genus Asplanchna. 



Asplanchnopus . 

 Harringia. 

 Family TESTUDINELLID^. 

 Genus Testudinella . 

 Pompholyx. 

 Family TROCHOSPH^RID^. 

 Genus Trochosphaera. 



