INFUSORIA. 139 



c. Not attached to each other (d). 



d. Lorica without a stem, adherent by the narrow 



base. Vagiiucola, 6. 



d. Lorica without a stem, adherent by the broad side. 

 Platycola, 7. 



d. Lorica with a short stem. Cothurnia, 8. 



e. Extended animal trumpet-shaped. Stentor, 9. 

 f. With one or more flagella at the front (g). 



f. Without flagella, but with cilia (A). 



g. Body very changeable in shape, colorless. Asia- 



sia, 10. 

 g. Body very changeable in shape, green or red. 



Euglena, 11. 

 g. Body not changeable in shape, colorless, notched 



in front. Chilomonas, 12. 

 g. Body not changeable in shape, green, with a short, 



stiff, colorless tail. P hocus, 13. 

 g. Body not changeable in shape, green, united in a 



revolving colony. Uvella, 14. 

 h. Cilia on the entire surface (i). 

 h. Cilia confined to the lower or flat surface (&). 

 i. Neck long, very elastic and extensile. Trachelo- 



cerca, 15. 

 i. Neck long, flattened, not extensile. Ampkileptus, 



16. 



i. Body brownish, slipper-shaped. Paramcecium, 17. 

 i. Body green, red, blue or almost black ; ovoid or 



trumpet-shaped ; cilia largest on the front. Sten- 



tor, 9. 



