mididæ

from The Century Dictionary.

• An American family of small platyrrhine quadrumanous mammals; the marmosets or squirrel-monkeys.
• In entomology, a small family of large, moderately bristly flies belonging to the tetrachætous series of brachycerous Diptera, with clavate antennæ of which the third joint has several segments, typified by the genus Midas. There are several other genera and about 100 species. Also Midasidæ, Midaidæ, Mydasidæ, etc.