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 Epping Forest specimens were found in a bog- 

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

 pholyxophrys, Acanthoci/stis, and Pamphagus hyalinus 

 \_Lecythium hyalinum] 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. 

 (PI. LVI, figs. 7 and 8.) 



Microgromia 



ARCHER in Qrt. Jm. Micr. Sci. (N. s.) XVI (1876), p. 105 ; in Proc. 



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

 Microgromia mucicola 



ARCHER in Qrt. Jrn. Micr. 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. viii, f. 9 ; op. cit. Ill, 3 (1880), p. 283. 

 BRADY in Jrn. R. Micr. Soc. 1887, p. 877. 

 BUTLER in Brit. ASPOC. 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; pseudopodi,a 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/x; breadth 6-7 ft. 



Habitat. The mucous investment of Alga3, e. g. 

 " Dicti/osphcerium " and Cosmocladium. 



IRELAND. Rocky 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 



