CLASSIFICATORY SYSTEMS OF SIEBOLD AND OF PERTY. 203 

 C. T. VON SIBBOLD, 'Lehrbuch der Vergleichenden Anatomic,' 1845. 



Class INFUSORIA. 



ORDER I. ASTOMA (no oral aperture). 



Family i. ASTASI^EA : Gen. Amblyophis, Euglena, Chlorogonium. 

 2. PERIDIN^EA : Gen. Peridinium, Glenodinium. 

 3. OPALIN^EA : Gen. Opalina. 



ORDER II. STOMATODA (with a distinct oral aperture). 



4. VORTICELLINA : Gen. Stentor, Trichodina, Vorticella, Epistylis, Car- 

 chesium. 



5. OPHRYDINA : Gen. Vaginicola, Cothurnia. 



6. ENCHELIA : Gen. Actinophrys, Leucophrys, Prorodon. 



7. TRACHELINA: Gen. Glaucoma, Spirostomum, Trachelius, Loxodes, Chilo- 

 don, Phialina, JBursaria, Nassula. 



8. KOLPODEA : Gen. Kolpoda, Paramecium, Amphileptus. 

 ,, 9. OXYTRICHINA: Gen. Oxytricha, Stylonychia, Urostyla. 

 10. EUPLOTA : Gen. Euplotes, Himantophorus , Chlamydodon. 



MAXIMILIAN PERTY, ' Kleinster Lebensformen,' 1852. 



Sub-Kingdom ARCHEZOA. 

 Class INFUSORIA. 



SECTION I. PHYTOZOIDIA (Filigera). 



Family i. UINOBRYINA : Dinobryon. 



2. VOLVOCINA: Syncrypta,Voh'ox,Spharosira,Pandorina,Synaphia,Gonium, 

 Hirmidium. 



3. MONADINA : Heteromitus, Ampkimonas, Tetramitus, Trichomonas, Mallo- 

 monas, Pleuromonas, Trepomonas, Spiromonas, Cercomonas, Monas, 

 Menoidium, Chromatium, Acari&um, Polytoma, Uvel/a, Anthophysa. 



,, 4. AsTASiiE : ug/e/ia, Astasia, Peranema, Colacium, Eutreptia, Chloro- 

 gonium, Zygoselmis, Dinema. 



5. THECOMONADINA : Chatotyphla, Trypemonas, Chonemonas. 



,, 6. CRYPTOMONADINA : Cryptomonas, Phacotus, Anisonema, Phacus, Lepo- 



cindis 

 7. PERIDINIDA : Ceratium, Glenodinium, Peridinium. 



