6 



The specimens did not differ from the typical Amphileptus Clapa- 

 redei, except that several were slightly broader. 



Habitat: Lehen ìNov.), Ziegelei Merzhausen (Nov.), Universitäts- 

 wiese (Dec), Brunnen Herdern (Dec), Elsässer Breisach (Dec). 



Amphileptus carcìiesi St. 



Body large, length 150—160 ,u, breadth 29—33 j.i. 



This species is distinguished from the former by its shape and by 

 the presence of trichocystes. The specimens were slightly smaller than 

 those of Roux, the largest measuring only 156 u in length. 



Habitat: Altwasser Breisach (Dec). 



Lio n otiis Wrzesn . 



Of this genus the following species were found : Lionotus fasciola^ 

 lAonotus lamella^ Lionotus vesiculosus^ Lionotus diaphamis anà Lionotus 

 folium^ the last comprising the Lionotus anser of Biitschli and the 

 Lionotus Wrxesnioivski of Kent. 



Lionotus fasciola Ehrbg. 



Body of medium size, length 80 — 100 u, breadth 17 — 25 u. 



The specimens were typical and were marked by furrows and tri- 

 chocysts on the ventral side and trichocysts along the left border of 

 the buccal furrow. In several specimens the macronucleus was formed 

 of two oval masses joined together by their ends and not by a rod-like 

 portion as is usual. The species is very common both in fresh and in 

 putrid water. It was especially abundant in December. 



Habitat: Lehen (Oct., Nov., Dec.) , Hugstettin Freiburg No. 4 

 (Oct.), Universitätswiese (Nov.ì, "Waldsee Upper (Dec), Waldsee Lower 

 (Dec), Altwasser Breisach (Dec), Elsässer Breisach (Dec), Brunnen 

 Herdern (Dec). 



Lionotus lamella Ehrbg. 



Body small or of medium size, length 60 — 92 /*, breadth 10 — 20 f.i. 



The specimens were typical, but reached a greater length than that 

 given by Boux and Schewiakoff. The breadth agreed more with the 

 limits given by Roux 12 — 15 ,«, and none reached the maximum limit 

 of 20 (.i as given by Schewiakoff. 



Habitat: Lehen (Dec), Universitätswiese (Dec), Ziegelei Merz- 

 hausen (Nov., Dec), Zoological Garden (Jan.). 



Lionotus folium Duj. 



Synon. L. anser Biitschli. 



L. filum Gruber. 



L. wrxesniowskii Sav. Kent. 

 Body very large, length 400 — 1020 /(, breadth very variable. 



