MR. G. H. WAILES ON FRESHWATER RHIZOPODA. 201 



Freshwater Rhizopoda from North and South America. 

 By G. H. Wailes, F.L.S. 



(Plate 15.) 

 [Read 19tli June, 1913.] 



UNITED STATES. 



During the year 1912 I was able to augment the records of Rhizopoda from 

 the Eastern United States, described in a paper read before this Society in 

 April 1912 *, by collections from the following localities : — 



New Jersey. — The Palisades on the west bank of the Hudson River from 

 opposite Yonkers for about 5 miles southward ; gatherings from pools, moss, 

 and sphagnum. This district dries up almost completely during the summer, 

 but 99 species and varieties were recorded, including Difflugia oviformis, 

 D. ruhescens, Nehela caudata, JS'. tenella, Euglyplia crenulata, E. alveolata 

 var. cirrata, and Cryptodi-ffliigla ehoracensis, besides others noticed at greater 

 length below. 



Englewood and Leonia ; gatherings from pools, ditches, etc., and a large 

 swamp forming part of the Hackensnck Meadows : from this district 

 41 species were obtained, including JSelela dentistoma Yav. lacustris, Eugli/pha 

 alveolata var. cirrata, and P seudodifflugia fulva. 



Princeton ; squeezings from water-plants and sediment from Carnegie 

 Lake, sphagnum from a marsh about one mile north of the lake, and 

 gatherings from a pond near Railway : 57 species were obtained, including 

 Difflugia oblonga var. cornnta, D. oviformis, D. ridyescens, D. urceolata, Nehela 

 scutellata, Euglyplia alveolata var. cirrata, and P seudodifflugia gracilis. 



New York State. — West Point on the Hudson ; gatherings from a lake 

 and small marsh, from which 28 species were obtained, including BuUimda 

 indica, Eughjpha rotunda, and P seudodijfflugia fulva. 



Baldwin, Long Island ; gatherings from a large pond having sphagnum 

 and Drosera rotundifolia growing on the margin : 39 species were recorded, 

 including P seudodifflugia Arclieri and P. gracilis ; Difflugia ridjescens and 

 Cyphoderia trocJms var. ampliorcdis were particularly numerous. 



Virginia. — Ocean View near Norfolk ; two gatherings of water-plants 

 •and some sediment collected by E. Solomonsky : from these 44 species were 



* Jouru. Liun. Soc, Zool. xxxli. (1912) pp. 121-161. 



