HOLOTRICHA 

 d 



541 



Fig. 247. a, b. Colpoda cucullus (a, X340; b, oral region) (Kahl); 

 c, C. inflata, X540 (Stokes); d, C. calif ornica, X670 (Kahl); e, f, Tillina 

 magna, XlOO (Bresslau); g, Bresslaua vorax, XlOO (Kahl); h, Bry- 

 ophryabavariensis, X280 (Kahl);i, Woodruffia rostrata, Xl90 (Kahl). 



anterior end, its right edge continues in horseshoe form around 

 the posterior end and half of the left edge ; anterior portion of left 

 edge of the cytostome with posteriorly directed membrane; 

 macronucleus oval or spherical; micronuclei; in fresh water, 



B. havaricnsis K. (Fig. 247, h). 50-120m long. 



Genus Woodruffia Kahl. Form similar to Chilodonella (p. 526); 

 highly flattened snout bent toward left; cytostome, a narrow 

 diagonal slit, its left edge w^th a membranous structure and its 

 right edge with densely standing short cilia; macronucleus spheri- 

 cal, many (?) micronuclei; contractile vacuole flattened, terminal; 

 in salt water. 



W. rostrata K. (Fig. 247, i). 120-180m long; salt water culture 

 with Oscillatoria. 



W. metaholica Johnson et Larson. 85-400|U long; division cysts 

 85-155/i in diameter; resting cysts 40-62^ in diameter; in fresh 

 water pond; California. 



Family 10 Entorhipidiidae Madsen 



Genus Entorhipidium Lynch. Triangular in general outUne; 

 colorless; large (155-350^ long); flattened; posterior end drawn 

 out with a bristle; anterior end bent to left; cytostome in depres- 

 sion close to left anterior border, with long cilia; with or without 



