504 XII. Description of a new Genus and two new Species of Cecidomyidae, and six new Species of Aculyplrale Muscidae {Ephydridae and MUicliidae). By J. E. Collin. Plates XIV, XV, XVI (figs. 1-4), XVII. CECIDOMYIDAE. Subfamily -.—CEOIDOM YINAE. Group : — Cecidomyiariae {Diplosariae). Farquharsonia, gen. n. Eyes oonnected for a long distance on upper part of liffad. Antennae 2 + 12 jointed, the flagellar joints in the male binodose, the two nodes being connected by a narrow neck except on the first flagellar jomt, where the neck is indicated by a slight constriction ; each node mth an apical circlet of looped threads, the loops all about equal in length and barely reaching to the base of the following node, the apical node of each of at least the first ten flagellar joints with, in addition, a basal circlet of inconspicuous pores similar to those on the antennal joints of the female, and like them mthout looped threads; apical joint with a short cylindrical terminal pro-cess. Flagellar joints of female cylindrical and sessile; each with two circlets of inconspicuous pores cormected by two longitudinal lines of similar pores. Palpi four-jointed, long and very slender. Proboscis extraordinarily developed, half as long again as head is deep, chiefly composed of the greatly developed paraglossae. Male hypopygium with a conspicuous triangular projection at base of the basal segment of the forceps ; apical segment slender and bare with a slightly hooked tip; upper anal lamella triangularly emar-ginate; lower lamella longer, somewhat battlcdorc-shaped, bearing numerous hairs round the margin, and considerably shorter than the style. Female ovipositor not extensile, terminating in two oval upper, and two very similar lower, lobes. Legs clothed with short adpressed scale-like hairs. All ungues bifid, the lower tooth shorter and more slender than the upper ; empodium rudimentary. Wings rather short and broad, auxiliary vein present (more easily distinguished where viewed from beneath), cubital vein slightly-dowTi-curved and ending very little below tip of wing. TRANS. ENT. SOC. LOND. 1921.— PARTS III, IV. (JAN. '22)
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