liv 
Fig. 
APPENDIX. 
DESCRIPTION OF PLATE X. 
1. Pleurophrys? spherica, Clap. et Lachm.? In the centre of the body-mass, which 
is not in contact with the curious test, which is formed of indistinguishable short 
bacillar and rounded particles agglutinated together, is seen a large orbicular 
““nucleus.”” From the anterior extremity is given off a considerable tuft of slen- 
der, linear, slightly branched pseudopodia. 
2. Pleurophrys? amphitremoides (sp. nov.). The specimen figured is covered with 
3. Pleurophrys? fulva (sp. nov.). Shows the buff or tawny colour of this minute 
numerous adherent navicular and other Diatomaceous frustules and arenaceous 
particles, and the body somewhat densely loaded with chlorophyll-granules, the 
anterior extremity giving off a rather dense tuft of slender branched pseudo- 
podia. 
form ; the test covered by angular, pellucid quartzose particles; the anterior ex- 
tremity giving off a short, rather dense, and branched tuft or shrub-like cluster 
of pseudopodia. 
4, Amphitrema Wrightianum (gen. et sp. nov.), from a specimen taken from ‘ Fea- 
ther-bed Bog,” near Dublin ; shows the mass of the body coloured green by chlo- 
phyll-granules. The drawing has been made from a selected example, in which 
each of the very short necks of the test is more than ordinarily evident, owing 
to the paucity of the external adherent foreign particles at those points, which, 
when present, tend to obscure it. These particles are to be seen most crowded 
along the lateral margins of the compressed elliptic test, leaving the central 
region more or less free from them, and thus allowing the sarcode-body within 
the more readily to be seen ; each extremity giving off a more or less dense tuft 
of branched pseudopodia, that from one of one extremities being, however, almost 
always more elongate and crowded than from the other. 
5. The same species, from a ‘‘ Glen-ma-lur” specimen, likewise selected the better to 
exhibit the two short necks appertaining to this form, owing to their exceptional 
freedom there from foreign particles. These latter, as in the preceding example, 
are here also seen more plentiful towards the lateral margin, but they are in this 
specimen somewhat less coarse; the test itself, too, is slightly larger; like the 
previous example, the tuft of pseudopodia from one extremity is larger, longer, 
and more crowded than the other. 
6. Diaphoropodon mobile (gen. et sp. nov.), showing the anterior, much branched 
and tufted pseudopodia extended, but not so fully as in some of the examples 
witnessed. To the right is the anterior marginal pulsating vacuole, fully dis- 
tended ; to the left, immersed in the body-substance, is seen the large spherical 
“nucleus,” the outer margin bordered by the fringe-like processes. 
7. Gromia socialis (sp. nov.), showing a group of three mutually united by anasto- 
mosis of their more or less reticulately branched pseudopodia, which here and 
there present variously shaped expansions, bearing different sized rather opaque 
granules, carried about in slow circulation. Immersed in the body portion of 
each is seen the whitish nucleus with its darker central nucleolus, 
8. The same; a single individual, showing a very long and branched pseudopodium. 
9. The same; a single stem-like sarcode prolongation projected, branching at the top 
in a dendroid manner; this being rather exceptional. 
