munnopsidæ

from The Century Dictionary.

• A family of isopod crustaceans having the body distinctly separated into two regions, the anterior consisting of the head and the first four segments of the pereion and the posterior composed of the last three segments of the pereion and the consolidated pleon. There are no eyes, and the various limbs are prehensile, ambulatory, and natatory. It contains the genera Munnopsis, Eurycope, Ilyarachna, Desmosoma, and Acanthocope.