melicertidæ

from The Century Dictionary.

• A family of social rotifers, of the order Rhizota, having a corona without setigerous lobes, the mouth lateral, the velum in the form of a continuous marginal band bent upon itself at the dorsal surface in such a manner as to encircle the corona twice, and the trophi malleoramate. It includes the genera Melicerta, Lacinularia, Megalotrocha, Trochosphæra, Conochilus, Limnias, Cephalosiphon, and Œcistes.