OF ANIMALCULES. 1/3 



401. VoRTicELLA auHta. — This and the three follow- 

 ing species belong to the genus Notommata, E. : they are 

 furnished with several rotatory organs, arranged equally 

 around the head, whicli is designated also by a contrac- 

 tion : the tail is forked. Found among lemna. 



402. VoRTicELLA lacinulata {Notommata, E.) — This 

 creature is sketched at figure 242 : it is pellucid, and in 

 swimming moves obliquely. Found in clear w^ater. 



403. Vorticp:lla longiseta {Notommata, E.) — The long 

 bristle-tailed Vorticella, shewn at figure 267, is an inte- 

 resting microscopic subject : it is well defined in 

 Book III., and may be readily known by the drawing. 



404. Vorticella ftlis {Notommata yY^.) — This ani- 

 malcule is shewn at figure 265 : the cilia are very dis- 

 tinct, and the bicaudal process stout. 



405. Vorticella tremula. — These appear, from the 

 figures of Miiller, to belong to the same family as the last. 

 The alimentary canal is short, and the tail simple : a 

 specimen is shewn, magnified, at figure 263. Found in 

 marine infusions. 



406. Vorticella constricta. — This is shewn at figures 

 266 and 274 : it is found among the lemna minor and 

 other aquatic plants. 



407. Vorticella togata. — This animalcule resembles 

 the V, longiseta ; but that the body is thick and short, 

 and its setaceous tail rather long. 



408. Vorticella furcata was first noticed by Leder- 

 muUer, but is not accurately known : it is nearly cylin- 



