FKESHWATEE EHIZOPODA I'ROM THE SEYCHELLES. 155 



Supplemental Notes on Freshwater Rhizopoda 

 FROBi THE Seychelles. 



In January 1912 I received from Sergt. Godley, Overseer of Crown 

 Lands, a gathering of moss and some sediment from a pool, collected in 

 Mahe at the beginning of December 1911. Mahe is of granite formation, 

 and contains few pools or lakes in which aquatic vegetation flourishes. The 

 following list consists principally of moss-inhabiting species ; considering 

 the restricted habitat the list is a fairly long one. Forty species and three 

 varieties are here recorded^ of which two varieties are now described for the 

 first time, namely : — 



Nehela gracilis var. stomata. 

 Nehela lagenifor'mis var. minor. 



Two recently described species, Nehela snitellata and N. tropica, occur 

 fairly numerously, and, curiously, in both species circular discs are mingled 

 with the square plates which usually form the sole constituents of the tests. 

 The presence of these discs confirms the propriety of placing these two 

 species among the Nebelce. 



Few of the species occurred numerously, and most of the individuals were 

 below the average size. 



Class SARCODINA. 



Sub-Class RHIZOPODA. 



Order AMCEBINA. 



Family LoBOS A. 



Genus Am(EBA. - - 



Amceba VERRUCOSA, Lhreuherg. 



Syn. A. terricola, Greeff. 

 Owing to the exceptional powers of this species in resisting desiccation it 

 was possible to identify one or two individuals. 



Order CONCHULIXA. 



Family Arcellida. 



Genus Arcella. 

 Arcella arenaria, Greeff. 



Rare. Diameter 80-90 yu-. 



