256 THE AMERICAN NATURALIST. [Vor. XXXIV. 
On account of the clear cortical layer, the color of the 
central mass, the two kinds of pseudopodia and the nature 
of their movements, and the invisibility of the nucleus, the 
animal bears a close resemblance to Vampyrella lateritia, as 
described by Leidy (* The Fresh-Water Rhizopods of North 
America," U. S. Geol. Sur., Vol. XII, Washington, 1879). 
There is a discrepancy in the nature of the terminal modi- 
fications of the shorter pseudopodia. Leidy states that these 
resemble the head of a pin, which was not the case in the 
Fic. 1. 
animal that I found. Nevertheless, the appearances tally so 
closely in all other respects that it may be referred to that 
genus. 
The second heliozoan, shown in Fig. 2, was exactly like the 
first in all respects but one. The size, 80 & in diameter, was 
the same. The long pseudopodia were identical in both animals, 
and the bodies, with their clear cortices and colored central 
masses, wholly alike. The difference consisted in the fact that 
the short pseudopodia of the form shown in Fig. I were repre- 
sented in the other by a mantle of flagella. This whole system 
moved in unison, but the movement of each individual proto- 
