rude test, if test it may be called, seemingly formed of hete- 
rogeneous foreign materials very loosely aggregated around the 
generally pretty regularly elliptic-shaped body. These foreign 
particles seem to be of very varied kinds (as in many 
l)ifflugue), such as diatomaceous frustules and fragments, 
arenaceous particles, protococcaceous cells (often seemingly 
living), brown peaty-looking particles, little indescribable 
shreds, all indistinguishably aggregated. From one end of 
this elliptic body the sarcode inner mass protrudes beyond this 
rude covering in an almost hemispherical or subconical form 
and from this comparatively bare prominence emanate the 
frequently numerous and very variably long hyaline pseudo- 
podia. I allude to this anterior prominence as only compa- 
ratively bare, for it often carries forward a few of the various 
external foreign bodies here and there disposed upon it, 
allowing the surface of the sarcode prominence to be seen 
between. The pseudopodia, as has been alluded to, are given 
off mostly very copiously, and radiate in any and every direc- 
tion, and are more or less ramified, but do not seem to inos- 
culate. A striking peculiarity in habit of this rhizopod, as 
presented by many of the specimens met with, is that when 
first placed upon the slide for examination the pseudopodia 
are often seen to be prolonged to a very great and inordinate 
degree, and densely ramified at several points along their 
length (see fig. 6). At first glance, indeed, the tufts of what 
I might call secondary pseudopodia almost seem under a low 
power as if they did not even belong to the animal at all, but 
represented some other quite unconnected and independent 
rhizopod. But upon a more close examination it is seen that 
these tufts are really connected with the body of the creature 
by a direct continuation of the lower portion of a pseudopod 
emanating from the anterior region. Shortly after being placed 
on tbe slide, however, these extravagantly long pseudopodia 
are drawn in by a rather quick contraction, the tufts disappear, 
and all that now can be seen is a radiant and rather dense 
bundle of but slightly ramified pseudopodia, of the same 
character as the accompanying minor ones springing from the 
sides and elsewhere, as seen in the example figured. And in 
this latter way the pseudopodia mostly presented themselves 
in my specimens, because the very remarkably long drawn out 
and densely tufted form so speedily disappeared under obser- 
vation, and no amount of patience in waiting on them was 
ever rewarded by seeing them again so extended. 
At first glance it might be thought that we had here to do 
with another Gromia, but several characters seem at once to 
exclude our form from a place in that genus. First, the test 
