( n. pl. )
A division of Pseudoneuroptera including the species which have four broad, flat wings, as the termites, or white-ants, and the stone flies (Perla).
( n. pl. )
A division of Pseudoneuroptera including the species which have four broad, flat wings, as the termites, or white-ants, and the stone flies (Perla).
Webster's Revised Unabridged English Dictionary. Пересмотренный полный словарь английского языка Webster. 2012