12 



if the putrid water had any effect on the species. It was found that they 

 all disappeared when the water became putrid, no trace was found al- 

 though the aquaria were examined daily. 



Habitat: Lehen (Oct., Dec), Kandel (Nov., Dec), Waldsee Upper 

 (Dec), Ziegelei Merzhausen (Dec). 



Cijclidium Hill. 



Of this genus, two species CycUdiiun heptatricimm , CycUdiuvL 

 glaucoma were found. 



Cyclidium heptatrichwn Schew. 



Body very small, length 20 — 30 /<, breadth 10 — 16 //. 



The specimens were typical, and had an oval-shaped nucleus. No 

 cilia were present on the posterior portion, and those on the anterior 

 were arranged in rows. 



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



Cyclidimn glaucoma O. F. Müll. 



Body very small, length 16—24 <<, breadth 9—12 /«. 



The specimens were typical, several were found that agreed with 

 the description of Cycl. glaucoma^ var. elongata in every way except for 

 the absence of trichocysts. 



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

 Zoological Garden (Jan., Febr.). 



Balantiophorus Schew. 

 Of this genus, one species Balantiophorus minutus was found. 



Balantiophorus minutus Schew. 

 Body very small, length 24 — 28 /<, breadth 9 — 14 fi. 

 The specimens were typical, but reached a greater maximum breadth. 

 Habitat: Lehen (Nov.), Ziegelei Merzhausen (Nov., Dec), Alt- 

 wasser Breisach (Dec). 



Heterotricha. 



This order is represented by species characteristic of the four fami- 

 lies, Plagiostomina, Bursarina, Stentorina, Gyrocorina. 



Blepharisma Perty. 

 Of this genus, only one species Blepharisma muscidus was found. 



Blepharisina musculus Biitschli. 

 Body of medium size or large, length 88 — 180 /<, breadth 32 — 64 ,</. 

 The specimens placed here agreed very well with the figure and 

 description given by Biitschli, but do not agree with the figures of 



