No. 403.] VOTES ON A SPECIES OF PELOMYXA. 539 
Fig. 5, a portion of the body resting on the bottom, while the 
rest of the animal, divided at the end into pseudopodia, pro- 
jected freely upwards in the water. In this condition, Pelomyxa 
appears for the time being as an attached rhizopod with ten- 
tacle-like pseudopods, the nearest analogue to which is the 
interesting minute form Szy/amaba sessilis, found by Frenzel! 
at Cordoba in Argentina. 
If the animal in the undisturbed condition is not more or 
less rod-like, the body is frequently divided up into very long, 
slender pseudopodia, as in Figs. 6 and 7. In this condition 
the animal rests on the tips of certain pseudopodia, the rest of 
FiG. 1. 
IG. I Fic. 3. ES 
Fic. 2. Fic. 4. Fic. 5. 
Fic. 1. — P. car. as an opaque object. Simple, elongated condition. Zeiss a, X 4. Reduced to %. 
Fic. 2. — P. car. as an opaque object. Clavate condition. Zeiss a, X 4. Reduced to 1. 
Fic, 3. — P. car. as an opaque — Body an arc wes on the two ends. Zeiss æ X 4. Reduced 
Fic. 4. — P. car. as an ipee object. Body onewtar spirally curved, resting on its ends, Zeiss 
o X 4. edu ced to 14. 
Fic. 5.— P. car. as an opaque object. Body in ap is on Senge in part protruding up into 
water, nod steti like pseudopods. Zeiss a, X 4. Reduc 
the body not touching the surface. The other pseudopodia 
project freely in the water in various directions, and the whole 
body is thrown into boldly arching curves, which usually lie in 
several planes. When the animal is in this condition, with its 
irregular body extending in so many directions, it obviously 
dominates (Z2, can gather food from) a much larger cubic 
space than when in the simple rod-like condition. Now in that 
aquarium jar in which the Pelomyxas were best fed, and in 
which they increased so considerably in number (ten to fifty in 
five days), some form of the rod-like shape was nearly universal. 
Here the food (Stentors and other Infusoria) was most abun- 
1 Untersuchungen über die mikroskopische Fauna Argentiniens. Protozoa. 
Bibliotheca Zoologica, Heft 12, 1892-97. 
