In the Journal of the New York Entomological Society, Vol. III., pp. 130–131, Mr. Harrison G. Dyar writes as follows: “Prof. E. B. Poulton has shown that dorsal eversible glands are of general occurrence throughout the Lymantriidæ (Trans. Ent. Soc., Lond., 1887, p. 300) on the tenth and eleventh joints (segments), or rarely only on the eleventh joint (Dasychira pudibunda). Probably these structures are characteristic of the family, but Prof. Poulton did not find them in Demas. This genus has been considered to belong to the Noctuidæ, but English authors assume it to be a Lymantriid.