532 C. H. EDMONDSON AND R. H. KINGMAN. 



territory with considerable variation in local conditions as well as in 

 altitude, the list of species embodied in this brief report may we 

 represent the characteristic unicellular fauna of the entire country. 

 The portion of the article concerned with Rhizopoda is largely a result 

 of the work of R. H. Kingman, a student of zoology, who identified 

 and studied many forms from preserved material. By comparing the 

 list which follows with numerous local records of observers in America 

 and other parts of the world one sees some added evidence of the 

 wide distribution of many species of Protozoa. 



The accompanying figures, prepared by Mr. Kingman from per- 

 manent mounts, represent new, or rare species of Rhizopods or forms 

 showing considerable variation. 



Phylum PROTOZOA : Subphylum SARCODINA : 

 Class RHIZOPODA Subclass AMOEBEA. 



Order GYMNAMOEBIDA. 



Family Amoebidae. 



Amœba Ehrenberg. A. proteiis Leidy ; A. guttula Duj. ; A. sphae- 

 ronucleus Greef ; A. striata Penard ; A. radiosa Ehr. ; A. saphrina 

 Penard. 



The species of this genus were not common in any locality. 

 Material from Myoho-in Temple grounds, Kyoto, furnished the best 

 examples. Large individuals of A. radiosa were taken from Lake 

 Hakone. 



Hyalodiscus Hertwig and Lesser. H. rubicimdus H. and L. 



But one individual was observed. A very typical form, reddish- 

 brown in color. From a rice field, Kyoto. 

 Arcella Ehrenberg. A. vidgaris Ehr. ; A. discoides Ehr. ; A. costata 

 Ehr. ; A. arenaria Greef. 



Of the above species A. vulgaris is the more widely distributed 



