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IOWA ACADEMY OF SCIENCE Vol. XXIV, 1917 
length is two or three times the diameter of the body. Endo- 
plasm colorless, much vacuolated, nucleus not visible without 
reagents. Tentacles borne in a circlet near the distal end, some- 
times extending to a length of twice the body diameter. Body 
4 microns. 
Myriads of these suctorians were found in the city park dur- 
ing November, and again in April with dimensions twice as 
great. The spring specimens were slightly elongated and not so 
numerous. Sand does not give any figures or descriptions agree- 
ing with this form, the most nearly approximate being T. frem- 
cottei Sand. 
*Tokophrya species 2. , 59, figure 57. 
Body subpyriform, solitary, on delicate stalk more than twice 
the body length. Endoplasm colorless with a few granules and 
two posterior vacuoles. Tentacles cylindrical, straight, capitate, 
as long as the body, borne near the crown, and equidistant from 
each other. Number of tentacles as observed in the only speci- 
men under observation, four. Total length 37 microns. Found 
in the gold fish tank with N'uclearia. 
This is another species which does not correspond with any 
available description, the most closely approximate being T. 
francottei. As these two unknown T oiophryas were found under 
entirely different conditions, as they have a different number 
of tentacles, and as one is solitary while the others found in 
large numbers were never solitary, it seems reasonable to sup- 
pose them to be distinct. 
*Metacineta new species. 60 and 61, figure 57. 
Body incompletely filling a flattened hexagonal lorica, with 
a fascicle of tentacles issuing from each angle. One main 
tentacle of each group has an axial rod running some distance 
into the finely granular endoplasm. Nuclear material (?) scat- 
tered in irregular granules. Vacuole very large. No apparent 
aperture to lorica other than the perforations for tentacles. 
Lorica 50x61 microns. Average tentacle 30 microns. Maximum 
tentacle 133 microns. 
This remarkable suctorian was found early in the fall in 
company with a great many heliozoa in an infusion of pond 
water with many half decayed leaves. When it first came under 
my notice there was a violent commotion in its vicinity owing 
to the fact that two or three of its long tentacles had pierced a 
