17 



surface, it measured 320 ii in length and 24 ^< in bradtli. The animal 



when retracted measured 32 a in length and 16 a in breadth. The 



macronucleus is oval and laterally 



situated. The retractile pedicle is 



attached to the side of the sheath. 



The specimens differed from that 



figured by Bütschli, in showing 



no feather-like appearance of the 



anterior cilia. 



Habitat: Universitätswiese 

 (Nov.). 



vK-_ 



err---: 



Fig. 3. Tintinniditim flumatile. 



Hypotricha. 



This order is represented by 

 members of the following families 

 Oxytrichina, Euplotina, Aspidis- 

 cina. 



ürostyla Ehrbg. 

 Of this genus only one species, 

 ürostyla viridis., was found. 



Urostyla viridis Stein. 



Body of medium size, length 

 100—120 ,«, breadth 32—40 a. 



The specimens were little different from the type. They were den- 

 sely packed with Zoochlorellae. The peristome did not exceed the third 

 of the length. The macronucleus was more spherical than oval in shape. 

 The largest specimen measured 112 ,u in length, and 32 f.i in breadth. 



Habitat : Zoological G-arden (Dec). 



Kerona Ehrbg. 

 Of this genus the single species, Kerona polyporum was found. 



Kerona polyporum Ehrbg. 



Body large, length 130 — 180 ,«. 



This species was found in abundance on Hydra fusca'. The speci- 

 mens were typical. I have been unable always to get the six parallel 

 rows of ventral setae. Otherwise the specimens agreed with the de- 

 scription of the species. 



Habitat: Altwasser Breisach (Dec), Hanflocher (Dec). 



Stichotricha Perty. 

 Of the genus two species, Stichotricha secunda, and Stichotricha 

 aculeata were found. 



2 



