58 
BULLETIN OB' THE LABORATORIES 
ORDER I, RHIZOTA. 
Family FLOSCULARIDAE. 
I Genus Floscularia, Oken. 
Sp. I. Floscularia ornata, Ehrenberg. 
Floscularia ornata, Hudson and Gosse. The Rotifera. or Wheel-animalcules, 
Vol. I, p. 50; pi. I, fig. 9 - 
Floscularia ornata, C. L. Herrick, Bull, of Sci. Lab. of Denison Univ., 
Vol. I, p. 
This species is not very abundant in this locality. It is occasion- 
ally found attached to the roots of the duck weed {Leinnacea polyrrhi- 
za, L . ) 
ORDER II. BDELl.OIDA. 
Family PHILODINADAE. 
II Genus Philodina, Ehrenberg. 
Sp. 2. Philodina roseola, Ehrenberg. 
Philodina roseola, Hudson and Gosse, The Rotifera, or Wheel-aniinalctdes, 
Vol. I, p. 99; pi. IX^ fig. 4. 
This species is abundant in all of our pools that contain water 
plants. Occasionally it adopts unique habitations. I have often 
found one or more of them inhabiting the cast off shells of some 
cladocera. 
^P- 3- Philodina megalotrocha, Ehrenberg. 
Philodina negalotrocha, Hudson & Gosse, The Rotifera* 
or Wheel-animalcules, Vol. I, p. loi; pi. IX, fig. 7. 
This species appear to be quite rare. I have encountered it but 
once. Then it was found among a mass of filamentous algae which 
had been gathered from a shallow meadow pool. There it was quite 
abundant. 
III. Genus Rotifer, Schrank. 
Sp. 4. Rotifer vulgaris, Shrank. 
Rotifer vulgaris, Hudson and Gosse, The Rotifera, or 
Wheel-animalcules, Vol. I, p. IC4; pi. X, fig. 2. 
This species inhabits a few of our stagnant ponds. It is found in 
company with Cyclops vhidis, Jurine, naiad worms and other filth-lov- 
ing creatures. 
