of England and India. 29 
Obs. Only two specimens of this Rhizopod were obtained 
viz. one containing the animal in a passive state, and the other 
empty. They were found in the water which had been poured 
over some specimens of Peltigera canina, to moisten them ; and 
these specimens had been brought from the neighbourhood of 
Tavistock. Figures of both tests are given to show that there is 
some little variety in their shape; and the small one is drawn 
upon the same scale as that of the Diffugie generally, to show 
its relative size. In the test containing the animal, the latter 
will be observed to be retracted, and, as usual under such cir- 
cumstances, to have secreted a kind of fibrous structure, which 
is arranged transversely, in the form of a diaphragm, towards 
the aperture. Portions of undigested food are seen in the body; 
and the presence of two of these around the nucleus (one of 
which is posterior to it, in which position it never occurs in 
Euglypha) makes me call this Rhizopod, provisionally, a Dzf- 
flugia, although the form of the pseudopodia can alone settle 
this question, which thus must be left for future observation to 
determine. 
Difflugia spiralis, Bailey (mihi). PI. I. fig. 9. 
This species is also very common here. I never saw it in the 
island of Bombay. It is generally covered with grains of hyaline 
quartz, but still not unfrequently with minute, short, cylindrical, 
colourless filaments, arranged parallel to each other, although in 
a more or less tortuous manner (d). In Dr. Wallich’s figure of 
this species, under the name of “ Diffiugia proteiformis (var. septi- 
fera” (Annals, ser. 3. vol. xi. pl. 10. fig. 12), the covering appears 
to consist of little subround bodies, of uniform shape; and in 
that of D. acwmninata, Ehr., close by, it is observed (p. 453)— 
“the portion of the test around the aperture is built up entirely 
of chitinous pellets.” 
Diffiugie ——? PII. figs. 10, 11. 
The tests of two other Difflugia (figs. 10 & 11) were both found 
in heath-bog water, with D. urceolata, the former empty, the 
latter containing the animal; but as these were the only speci- 
mens of this shape met with, I have merely inserted their figures 
for what they may hereafter prove worth. 
Ecurnoryxis, Clap. et Lachm. 
Echinopyxis aculeata, Ehr. (sp.) Pl. I. fig. 8. 
Common in the island of Bombay, as well as on the south 
coast of Devon, at Budleigh-Salterton. The largest specimens 
that I have seen in the latter locality measured about —1,th of 
2 100 
an inch long, and about the same transversely in the broadest 
