26 THE AMERICAN MONTHLY [Jan. 



Habitat. — Fossil on the rocks of Barbadoes. 



This form was found by Mr. H. J. Sutton of Philadel- 

 phia, Pa., who took the photograph from which the draw- 

 ing accompanying this description was made. 



Infusoria for Identification. 



Last Spring I caught a small mud turtle about two or 

 three inches in diameter. Around the edge of its shell 

 was a white fringe. Upon examination, this fringe turned 

 out to be animals . I kept the turtle, and in a short time 

 these animals covered his entire body, except his upper 



and lower shells ; they covered his neck and head, feet 

 and legs and even his tail. 



They were colorless and were on a straight stem, cilia 

 were only around the mouth. They seemed to increase 

 by binary subdivision, there being usually 2, 4 or 8 ani- 

 mals on a stem. 



I think that they attached themselves to the turtle so 

 as to be carried from place to place in order to get food. 

 Can anyone tell me from this slight description what the 

 name of this Infusoria is ? 



