The Classification of Protozoa 113 



Suborder 2. Oligotrichina Biitschli 1887 



Suborder 3. Tintinnoina Claparede and Lachmann 1858 



Suborder 4. Entodinioinorphina Reichenow 1929 



Suborder 5. Hypotrichina Stein 1859 

 Order 3. Peritrichida Stein 1859 

 Order 4. Chonotrichida ^^'alIengren 1896 

 Class 2. Suctoria ClaparMe and Lachmann 1858 



Pearse's report (18), in which the preceding names were listed, 

 strongly advocated adoption of the following endings for names of tax- 

 onomic groups: phylum, -a; subphylum, -a; class, -ea; subclass, -ia; order, 

 -ida; suborder, -ina. The obvious advantages of such imiformity, both to 

 professional taxonomists and to students, far outweigh any potential re- 

 strictions on creative license in formulating new taxonomic names. This 

 system of uniform spelling has been adopted in one recent classification 

 (13), and will be adhered to in the following chapters on taxonomy of the 

 Protozoa. 



The writer will follow the system outlined below; this is similar to the 

 classification adopted by Jahn and Jahn (13). 



Subphylum 1. Mastigophora 



Class 1. Phytomastigophorea 

 Order 1. Chrysomonadida 

 Order 2. Heterochlorida 

 Order 3. Cryptomonadida 

 Order 4. Dinoflagellida 

 Order 5. Phytomonadida 

 Order 6. Euglenida 

 Order 7. Chloromonadida 



Class 2. Zoomastigophorea 

 Order 1. Rhizomastigida 

 Order 2. Protomastigida 

 Order 3. Polymastigida 

 Order 4. Trichoraonadida 

 Order 5. Hypermastigida 

 Subphylum 2. Sarcodina 



Class 1. Actinopodea 

 Order 1. Helioflagellida 

 Order 2. Heliozoida 

 Order 3. Radiolarida 



Class 2. Rhizopodea 

 Order 1. Proteomyxida 

 Order 2. Mycetozoida 

 Order 3. Amoebida 

 Order 4. Testacida 

 Order 5. Foraminiferida 

 Subphylum 3. Sporozoa 



Class 1. Telosporidea 

 Subclass I. Gregarinidia 

 Order 1. Eugregarinida 

 Order 2. Schizogregarinida 

 Subclass 2. Coccidia 



Subclass 3. Haemosporidia 

 Class 2. Cnidosporidea 

 Order 1. Myxosporida 

 Order 2. Actinomyxida 

 Order 3. Microsporida 

 Order 4. Helicosporida 

 Class 3. Acnidosporidea 

 Subclass 1. Sarcosporidia 

 Subclass 2. Haplosporidia 

 Subphylum 4. Ciliophora 

 Class 1. Ciliatea 



Subclass 1. Protociliatia 



Order 1. Opalinida 

 Subclass 2. Euciliatia 

 Order 1. Holotrichida 

 Suborder 1. Astomina 

 Suborder 2. Gymnostomina 

 Suborder 3. Trichostomina 

 Suborder 4. Hymenostomina 

 Suborder 5. Thigmotrichina 

 Suborder 6. Aposloniina 

 Order 2. Spirotrichida 



Suborder 1. Heterotrichina 

 Suborder 2. Tintinnina 

 Suborder 3. Oligotrichina 

 Suborder 4. Eiitodiniomorphina 

 Suborder 5. Hypotrichina 

 Suborder 6. Ctenostomina 

 Order 3. Peritrichida 

 Order 4. Chonotrichida 

 Class 2. Suctorea 



