eriocnemis

from The Century Dictionary.

• noun A genus of humming-birds, containing about 18 species, which have downy puffs or muffs about the legs, whence the name. Reichenbach, 1849 Also Eriopus.
• noun In entomology, a genus of large beetles, of the family Lucanidæ, of which more than 12 species, from Australia, the East Indies, the Moluccas, and Java, have been described.