In my check list, New york, May, 1882, I first proposed the collective term Cydosiœ, having for its sub-family type the wellknown Cydosia nobilitella. I associated with it penthetria, Hy. Ed., not from any study of this genus, unknown to me in nature, but merely on the strength of certain of Mr. Edwards's remarks. This latter genus, under the name Tantura, Kirby, is now referred to the Lithosiidœ by Neumoegen and Dyar, and probably correctly. I excluded the gents Oeta, previously referred here, as I believed it to belong to the Tineidœ, as indicated by Zeller. To this sub-family Cydosiinœ, Grote, the genus Cerathosia is also referred by Neumoegen and Dyar, following Smith's more recent opinion.