132 BRITISH FRESHWATER RHIZOPODA. 



viduals are some distance apart they are connected by 

 a pseudopodal reticulum ; and when closely aggregated 

 they are immersed in plasma. 



(The Bpping Forest specimens were found in a bog- 

 pool off Copper Hall Lodge Road, in which also Pom- 

 pholyxophrys, Acanthocystis, and Pamphagiis hyalinus 

 [ Lecythiiim hyalinmii] occur. The characters presented 

 by a colony of sixteen or eighteen individuals agreed 

 very closely with Archer's description ; but in his figure 

 as given in the ' Qrt. Jrn. Micros. Sci.,' 1869, PI. xxii, 

 the pseudopodal filaments are inadequately repre- 

 sented {Gash).) 



2. Microgromia mucicola Archer. 

 (PL LVI, figs. 7 and 8.) 



Mierogromia 



Aechee. in Qrt. Jrn. Micr. Soi. (n. s.) XVI (1876), p. 105 ; in Proc. 

 Dublin Micr. Club, III, 1 (1876), pp. 107-108). 

 Mierogromia mucicola 



Abcheb in Qrt. Jrn. Mior. Sci. (n. s.) XVII (1877), pp. 121-122, 194, 

 465, pi. viii, f. 9; in Proc. Dubl. Micr. Club, III, 2 (1878), pp. 239- 

 240, 247, pi. Tiii, f . 9 ; op. cit. Ill, 3 (1880), p. 283. 

 Brady in Jrn. R. Micr. Soo. 1887, p. 877. 

 BuTLEE in Brit. Assoc. Handb. Dublin (1908), p. 219. 



Test minute, pyriform, hyaline, without extraneous 

 adherent particles ; plasma granular ; nucleus single, 

 containing a single nucleole ; contractile vacuoles 

 usually present but obscure; pseudopodia arising from 

 a peduncle, branching and anastomosing ; habit usually 

 solitary but sometimes occurring in groups of two or 

 at most three individuals. 



Length about 10 ;u.; breadth 6-7 jj-. 



Habitat. — The mucous investment of Algae, e. g. 



" DictyosplLoerium " and GosmoclaJlinn. 



Ireland. — Eocky Valley, Bray, Wicklow {Archer). 



This species is so inert, and the pseudopodia are 

 so seldom displayed and so easily overlooked when 

 displayed, that Archer mistook it at first for an algal 

 spore ; for the same reasons and also on account of its- 



