Cat. Lep. Ph. Brit. Mus. Vol. 1 1127. Eucereon phaeoproctum, n. sp. (Plate XVII. fig. 16.) Eucereon costulatum, Druce, Biol. Centr.-Am., Het. i. p. 87 (part). Head, thorax, and abdomen fuscous; vertex of head with an orange patch, shoulders with orange spots; patagia striped with orange; abdomen with the basal segments whitish below. Fore wing yellow, the veins and submedian interspace streaked with fuscoust o beyond the cell; a short streak in cell with mark on costa above it; a large discocellular spot conjoined to a mark on costa; traces of an oblique series of spots on the veins beyond the cell; a subterminal band, curved and wide towards costa, interrupted between veins 3 and + and bent out to tornus; a terminal band from apex to vein 3. Hind wing fuscous, paler towards base, Fore wing with vein 6 from below angle of cell; hind wing with 3 separate from 4, 5. Hab, Guaremata (Champion), 3 ¢ , type; Costa Rrcoa ( Underwood, Rogers),5 2 ; Panama, Chiriqui (Champion), 1 ¢ : Godman-Salvin Coll, Exp., & 26, 2 30 millim. AZ NOTE: Cat. Lep. Ph. Brit. Mus. uses a non-standard definition of "tegulae" and "patagia". From Vol. 1: "The thorax consists of three segments-the prothorax, bearing the tegulm or collar-lappets, the patagia or shoulder-lappets, and the fore legs ..."