IN my investigation of the Rhizopodous fauna of this country I have met with numerous forms, chiefly in the lowland districts of Cheshire, and in Epping Forest, Essex, which do not appear to have been yet recorded as British, and some which are new to science. Mid-Cheshire contains low-lying areas of bog or morass, the home of many rare plants, both phanerogamic and cryptogamic. These places are always richest in Rhizopoda. Testaceous forms occur in considerable abundance, in wet Sphagnum, and amongst the rootlets of such mosses as Philonotis fontana and Aulacomnium palustre, the conditions favourable to their development being for the most part constant. The genera represented are Difflugia, Nebela, Hyalosphenia, Heleopera, Quadrula, and others of the lobose type, whilst the Euglyphina occur also in great variety and perfection. Most remarkable, perhaps, are some naked reticularian Rhizopods, of which one is described herein under the generic name Penardia. A second, and closely allied form, may be referable to the same genus, but its place cannot be determined without further study.