395 Descriptions of New Chalcid-Flies from Hawaii and Mexico (Hymenoptera). BV P. II. TIMHERLAKE. (Prosonted at the meeting of December ti, 1923.) The types of the Hawaiian species described in this paper are deposited in the collection of the Hawaiian Entomological Society, and those of the two Mexican species of Encyrtidae are in the collections of the Hawaiian Sng^ar Planters' Experi-ment Station. Encyrtidae. Acerophagus debilis n. sp. Fig. 1. This species is most like notativentris (Girault) among previously de-scribed species, and differs in the position and arrangement of the ocelli, in the much more clavate antennae, and by lacking a fuscous mark on the abdomen of the male. Female. Head of the same general shape as in other North American Fig. 1. Acerophagus (Ichilia. A. Antenna uf female, ble in dorsal and frontal views. B and C. Mandi-species of the genus, but rather thicker fronto-oeeipitally than in most species; in dorsal view fully rounded on the sides and in front; in side view thickest opposite the anterior ends of the eyes, the planes of the Proe. Haw. Ent. Soc, V, No. ,3, December, 1924.