202 ME. G. H. WAILES OX FEESHWATER 



obtained, including Difflugia oviformis, D. tuherculata and var. minor, only- 

 one species o£ Nehela — N. barhata, Euglyplia alveolata var. cirrata, E. armata,. 

 E. crenulata, E. rotunda, and Pseudodifflugia gracilis. Especially numerous 

 was a handsome form of Centropyxis acideata var. discoides, about 200 /x in 

 diameter, having a brown test with usually three spines. 



The above localities and a further examination of previous collections added: 

 24 species and varieties to the 161 previously recorded, including three new- 

 species and one new variety. Short notes on these additional records are- 

 added. 



Sub-Class RHIZOPODA, 

 Order AMffiBINA. 



Family L o b o s A. 



Amceba pilosa, Cash. 



Linn. Soc. Journ., Zool. xxix. (1904) p. 219. pi. 26. fig. 8. 



Cash & Hopkinson, Brit. Fresliw. Ehiz., Etiy Soc, i. (1905) p. 62, p]. 4. figs. 1-5. 



Two individuals of this species w^ere obtained in Van Cortlandt Park, N.Y.^. 

 when inactive they were about 50 fi in diameter and covered with fine cils 

 6 fi in length ; the endoplasm was loaded with various kinds of granules, 

 including green and yellow bodies ; two rather small contractile vacuoles 

 were visible near the periphery, but the nucleus could not be distinguished. 

 When in movement the ectoplasm flowed in short lobular expansions, the 

 surfaces of which became immediately covered with the fine cils. Whilst 

 under observation one individual rejected all the granular inclusions, leaving 

 a finely granular grey plasma which completely dispersed immediately on 

 becoming dry. 



Amceba proteus var. geanulosa. Cash. 



Cash & Hopkbson, Brit. Freshw. Ehiz., Eay Soc, i. (1905) p. 48, pi. 1. fig. 3 ; pi. 3. 

 fig. 2. 

 Amoeba prote^is pars, Leidy (6), p. 30, pi. 1. fig. 4. 



Occurs on the Palisades, N.J. One individual measured 600 /x in length* 

 and about 90 yu, in breadth, when active. 



Amceba villosa, Wallich. 



Leidy (6), p. 62, pi. 2. figs. 14-16 ; pi. 8. figs. 1-16. 

 Not uncommon on the Palisades. Albany, N.Y. {De Tarr). 



