HE TERO TRICHIDA 



377 



Stentor coeruleus Ehrenberg. In fresh water. Body bluish 

 in color and measures 130 to 265 microns in length. 



Stentor jnultiformis (Mliller). In salt water. Social. Ex- 

 tended body measures about 140 microns in length. 



Genus Folliculina Lamarck. Peristome is drawn out ; with 

 two wings; with a membranella. With an elongated pseudo- 

 chitinous lorica. Marine. 



Folliculina ampulla Miiller (Fig. 162, a). Body more than 

 1 mm. in length when extended. Salt water. 



Genus Climacostomum Stein. Medium large. Colorless or 

 green with Zoochlorellae. Body form constant, compressed 

 dorso-ventrally; right side convex. Peristome conspicuous; 



Fig. 162 a. Folliculina ampulla. X125 (After Stein). 



b. Climacostomum virens. X75 (After Stein). 



c. Boveria teredinidi. X410 (After Pickard). 



d. Caenomorpha medusula. X 150 (After Blochmann). 



cytopharynx long and curved. Contractile vacuole posterior 

 with two radiating canals. Macronucleus band-form, central. 

 Cysts pyriform or oval. Fresh water. 



Climacostomum virens (Ehrenberg) (Fig. 162, b). Body 

 about 250 microns long. 



Family 4 Boveriidae Pickard 



Genus Boveria Stevens. Ectoparasitic on gills of various 

 marine animals, such as Teredo, Bankia, Tellina, Capsa, and 

 Holothuria. Body conical, adoral zone conspicuous. One 

 macronucleus central and one micronucleus. One contractile 

 vacuole. 



