122 MK. G. H. WAILES ON FKESHWATER RHIZOPODA 



Of Rhizopoda 1(51 species and varieties are recorded from the above 

 localities, including five new species and ten new varieties ; about forty are, 

 I believe, now for the first time recorded from the United States. Four 

 species of Heliozoa are also recorded. 



In addition Nebela tropica, sp. nov., from Borneo, and Eugli/pha cristata 

 var. acicularis, var. nov., from the British Isles, are also described, as thej 

 illustrate the affinities of some United States species. 



The general results regarding distribution may be briefly summed up : 

 the Rhizopod fauna was rich both in number of species and individuals, the 

 majority of the species (say 80 per cent.) were similar to those found in 

 Europe ; the remainder consisted of : (1) species not uncommon in North 

 America but more or less rare in Europe ; (2) species or varieties which, so 

 far as we know at present, are peculiar to America ; (3) species in which 

 considerable '• local" variation or peculiarities occurred. 



Some species of Rhizopoda may be peculiar to Europe, or common there 

 and rare in America, but sufficient American data are lacking to enable any 

 definite pronouncement to be made on this subject. 



Slides containing specimens of the new species and varieties described in 

 this paper have been given to the New York Museum of Natural History, 

 where they are available for inspection. 

 ■ The dimensions given (yLi = '001 mm.) are o£ the specimens from the above- 

 named localities, except in the tabulated list of the genus Euglypha. 



I have to thank Dr. E. Penard for his assistance and for his kindness in 

 sending me mounted specimens from portions of some of the gatherings 

 which were sent to him. 



