Forehead flat, very oblique. Ocelli present. Tongue well-developed.
Antennæ ¾, in male—? Labial palpi long, straight, porrected, with long loosely projecting scales, attenuated to apex, terminal joint concealed. Maxillary palpi rather long, triangularly dilated with scales, not resting on labial. Posterior tibiæ with outer spurs half inner. Forewings with veins 8 and 9 stalked, 10 closely approximated to 9 towards base, 11 oblique. Hindwings somewhat broader than forewings; veins 3, 4, 5 tolerably approximated at base, 7 from a point with 6, anastomosing with 8 to ⅓; lower median naked, internal area loosely haired.
A singular genus, presenting a combination of characters which encourages the opinion I have latterly entertained, that the Hydrocampidœ and Scopariadœ ought to be united as one family.