22 



straight sides grayish in colour and measured from 85 — 93 // in length 

 and from 54 — 58 /^i in anterior breadth. The surface of the body was 

 smooth and the ciliary disc was not prominent. 

 Habitat: Elsässer Breisach (Dec). 



Vorticella hiigifdum Sav. Kent. 



Body of medium size, length 80 — 90 ^u, anterior breadth 40 — 45 /<, 



Only two specimens were found, but they agreed so closely with 



the description given by Saville Kent that they are included here. The 



pedicle was fully 12 times as long as the body in one, and fully 13 times 



in the other. 



Habitat: Zoological Garden (Jan.). 



Vorticella pietà Bhrbg. 



Body small, length 43—45 //, breadth 32—36 .«. 



A single specimen was found at the bottom of the aquarium. It 

 was recognized by the smooth body surface, and by the contractile por- 

 tion of the pedicle being formed not of one continuous thread, but of 

 short pieces placed the one above the other. 



Habitat: Elsässer Breisach (Jan.) 



Vorticella monilata Tatem. 

 Body small or of medium size, length 60- — 90 /<, breadth 37 — 56,</. 

 The specimens were few but typical, the only noteworthy feature 

 being that in some the rows of tubercles could not be said to be parallel. 

 Habitat: Elsässer Breisach (Jan.). 



Carchcsium Ehrbg. 



Of this genus only one species, Carchesiimi polypiìiiDìi was found. 

 Carchesium polypinum Lin. 



Body small or of medium size, length 60 — 100 ,u, breadth 42 — 60 u. 



The specimens agreed with the description given of this species 

 except in their greater size 80 — 100 ^i in length and 50—60/6 in breadth. 

 With regard to size they agreed with Carchesium spectabile but in no 

 other feature. The colonies were small varying in number from 2 — 30 in- 

 dividuals. 



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

 AValdsee Lower (Dec). 



Zo otlia m n i u m Ehrbg. 

 Of this genus only one species was found, Zootliamnium affine. 



Zoothamnium affine Stein. 

 Body small or of medium size, length 68 — 93 jW. 

 This species was recognized by its relatively thick pedicle, which 



