F 01 ) 
XII. Description of a new Genus and two new Species of 
Cecidomyidae, and six new Species of Acalyptrate 
Muscidae (Ephydridae and Milichidae). By J. KE. 
CoLLin. 
Puares XIV, XV, XVI (figs. 1-4), XVII. 
CECIDOMYIDAE. 
Subfamily :—CHOIDOM YINAE. 
Group :—CxrcipoMYy1ariAk (DIPLosARIAL). 
FARQUHARSONIA, gen. D. 
Eyes connected for a long distance on upper part of head. 
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 joint, where the neck is indicated by a slight constriction ; 
each node with 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 without 
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 connected 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 battledore-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- 
down-curved and ending very little below tip of wing. 
TRANS. ENT. SOC. LOND. 1921.—PaRTs I, Iv. (JAN. ’22) 
