38 A. C. Stokes—Fresh-water Infusoria. 
Art. VII.—Notes on some apparently wha atc pace of fresh- 
water Infusoria ; by Dr. ALFRED C. Sto 
Ir is desirable but not always possible . crane the favor- 
ite position of an infusorian, whether near the surface of the 
water or near the bottom. Oceasionally inbeseinece can be made 
from the relative numbers captured at different depths, and it 
sometimes happens that a glance at the contents of the diges- 
tive vacuoles will indicate the infusorian’s relation to depth, 
yet it quite as frequently happens that the food particles are so 
matted together, and the collection so compressed, that a cor- 
rect sian is. not aac Instances do occur, however, 
. amon e free-swimming types, when the food within the sar- 
code etl fake whether the aicientalis prefer to grovel in the — 
e or to float on the sunlit water. To this class belong the 
following hitherto undescribed forms, all of which were taken 
from the debris and sediment at the bottom of an aquarium 
kept without macroscopic animal life solely for the cules sites 
of the infusorial inhabitants, or collected from the ooze of shal- 
low pools under the open sky. 
h of the new species of Loxodes, which I have 
named Loxodes vorax, and the creature’s favorite position are 
infusorian’s length often gorging it; in one or two instances — 
its voracious appetite has led it to capture a frustule so nearly 
repeat the attempt a second and a third time before Bay 
Seendonin ng it. 
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