Royal Microscopical Society. 265 



the animalcule possesses a distinct mouth, having on many occasions 

 observed it to take in food on the lateral as well as the anterior 

 surface of its body, it investing and engulphing its prey with an 

 expansion of its protoplasm after the manner of Amoeba. On 

 numerous occasions I have also certified the presence of two instead 

 of only a single flageUiform appendage. 



Addenda. 



In Anthophysa the interception of food is similar to that of 

 Monas. In Codosiga and Salpingseca it takes place anywhere 

 within the area circumscribed by the membranous collar, the dis- 

 charge of foecal matter being efiected within the same Kmits. 



