20 



Euplotes patella 0. F. Müll. 



Body of medium size or large, length 100 — 125,«, breadth 60 — 75 //. 



The specimens did not differ in any important point from the type. 

 The dorsal .surface was marked by furrows which varied in number from 

 6 to 7. The sjDecimens were all coloured green by Zoochlorellae. The 

 species seems to be generally distributed. 



Habitat: The species was found in every collection made. 



Aspidisca Ehrbg. 

 Of this genus two species, Aspidisca lynceus and Aspidisca costata 

 were found. 



Aspidisca lynceus 0. F. Müll. 

 Body small, length 40 — 55 /<, breadth 25 — 32 ii. 

 The specimens were typical, but I could find no trace of furrows 

 on the dorsal surface even in the largest specimen. 

 The species is generally distributed. 

 Habitat: The species was found in almost all the collections made. 



Aspidisca costata Duj. 

 Body very small, length 30 — 40 //, breadth 22 — 31 u. 

 The species agreed closely with the description given. The dorsal 

 face had always 6 well marked furrows. 



Habitat: Ziegelei Merzhausen (Dec), Altwasser Breisach (Dec), 



Peritricha. 



This order is represented by members of the two families Spiro- 

 chonina and Yorticellina. 



Spirochona Stein. 

 Of this genus the single species, Spirochona gemiuipara was found. 



Spirochona gemmipara Stein. 

 Body of medium size, length 100 — 120 f.i. 



The specimens were typical. Macronucleus was oval or circular. 

 Habitat: On Gammarus pulex. 



Trichodina Ehrbg. 

 Of this genus the single species, Trichodina pedictd us was found. 



Trichodina pediculus Ehrbg. 



Body small or of medium size, diameter 60 — 75 f.i. 



The specimens were circular in shape when seen from above. The 

 sides of the body are concave and the macronucleus is band shaped, 

 and placed transversally. 



Habitat: Altwasser Breisach fDec), Hochdorfer (Dec). 



