in der Naturgesch. d. Protozoen in den Jahren 1882 ii. 1883. 73 



10. Farn P 1 e u r n e m i d a e ,,membrane nou-vibratile, extending 



in front of and araund the oral fossa in a hood-like 

 manner". 

 I.Gen. Pleuronema Diij. 3 t^p. u. coromda n. sp. 



2. „ Cyclidium Ehrb. Bsp. 



3. „ Uronema Duj. 1 sp. 



4 „ Baeonidinm Perty 1 sp. 



11. Farn. Lembidae .,freeswiinniing. vermicular, natation ri- 



gorous; membrane forraing a prolonged erest-like 



border". 

 I.Gen. Lembus Cohn 3 sp. 

 2. „ Proboscella n. g. 1 sp. 



12. Farn. Trichonymphidae endoparasitic. vermicular ; mo- 



vements sliiggisch, writhing; bearing cilia of various 



lengths and an apparently more or less conspicuoiis 



undnlating membrane. 



1. Gen. Trichonympha Leidy 1 sp. ^ ^ _ 



^ V ., . Darm von Termes 



2. „ Pyrsonema Leidy Isp. flavipes 



3 ,, Dinenympha Leidy 1 sp. ' 

 Appendix Holotricha-Astomata: freeswimming, more or lest com 

 pJetely and evenly ciliate throughout; no oral aperture. 

 13. Farn Opalinida St. 



I.Gen. Opalina Park. 5 sp. 



2. ,, Anoplophrya St. 15 sp. 



3. „ Haptophrya St. 2 sp. 



4. „ Hoplitophrya St. 7 sp. 



II. Heterotricha Stein. 



A. Oral cilia forming a simple straight, or oblique adoral fringe. 

 l.Fam. Bursariadae St. 



1 . Gen. B u r s a r i a Müll. 1 sp. 



2. „ Balantidium Gl. er L. 5 sp. 



3. „ Nyctotherus Leidy 4 sp. 



4. „ Metopus C. et L. 1 sp. 



5. „ Metopides Quennerst. 1 sp. 



6. „ Plagiotoma Duj. 2 sp. 



B. Oral cilia describing a spiral or circular course around the oral 



aperture : 

 2. Fam. Spirostomidae freeswimming, peristome and adoral 



fringe confined to the ventral surface ; anal aperture 



postero- terminal. 

 I.Gen. Condylostoma Duj. Isp. 



2. „ Blepharisma Perty 2 sp. 



3. „ Spirostomum Ehrb. 2 sp. 



4. ., Leucophrys Ehrb. 1 sp. 



