CONTEXTS xi 



Infusoria — Class I. — Continual. 



Sub-class I. Holotricha Stein 1850 188 



Order 1. Astomida IS'i 



Order 2. Gymnostomida -490 



Sub-order 1. Prostomina (Prostomata Schewiakoff) 490 



Sub-order 2. Pleurostomina Schew. 1886; Em. Kahl 491 



Sub-order 3. Hypostomina (Hypostomata Schewiakoff) 491 



Key to Genera 491 



Order 2. Gymnostomida 491 



Sub-order 1. Prostomina 491 



Sub-order 2. Pleurostomina (Tribe Pleurostomata Schewia- 

 koff; Kahl) 497 



Sub-order 3. Hypostomina Schewiakoff 1896; Em. Kahl 498 



Order 3. Trichostomida Butschli 1889 499 



Order 4. Hymenostomida 503 



Sub-class II. Spirotricha Butschli 1889; Em. Kahl 1931 ... 508 



Order 1. Heterotrichida Stein 508 



Order 2. Oligotrichida Butschli 1889 512 



Order 3. Ctenostomida (Lauterborn) Kahl 1931 . . 516 



Order 4. Hypotrichida Stein s. str 516 



Sub-class III. Peritricha Stein 521 



Sub-class IV. Chonotricha Wallengren 522 



Class II. Suctoria Butschli 523 



CHAPTER XIV. 



Special Morphology and Taxonomy of the Sporozoa. 



Class I. Telosporidia Schaudinn 533 



Sub-class I. Gregarinina . . 534 



Order 1. Eugregarinida Doflein Emend 540 



Order 2. Schizogregarinida Leger (1892) 541 



Sub-class II. Coccidiomorpha Doflein 541 



Order 1. Coccidiida Leuckart, Em 541 



Sub-order 1. Eimeriina 541 



Sub-order 2. Hemosporidia Danilewsky, em. Doflein 542 



Sub-order 3. Babesiina 543 



Order 2. Adeleida 544 



Class II. Cnidosporidia Doflein 515 



Order 1. Myxosporidia Butschli 548 



Order 2. Actinomyxida Stole 551 



Order 3. Microsporidia Balbiani 552 



Class III. Acnidosporidia Cepede 555 



Key to Subdivisions and Genera of Sporozoa 558 



Bibliography ... 571 



