UROGLENA. 97 



but at last, to my surprise, I found it had twisted 

 itself off from the rest, and it soon swam away, 

 presenting the appearance of a perfect cluster. 

 The mutilated part left behind remained quite 

 still, though I watched it for some time, and I 

 have no doubt the members were dead. 



. 



Each animalcule of the cluster, in the genus 

 Uroglena, has an oblong yellow body, an eye and 

 a tail : by the latter it is fixed to its own par- 

 ticular envelope, and it radiates from the centre. 

 The common globe-like lorica, or mantle, covers 

 them all, but the proboscis projects beyond, and 

 gives the appearance of hairs in constant motion. 

 U. volvox is the only species, and is found in 

 turf-water. 



The only species of the genus Eiidorina is 



K 



