316 
J. R. MALLOCH. 
mainder of antennæ pale yellow; arista brown; palpi and proboscis yellow. 
Disc of mesonotum broadly opaque gray, this color extending less distinctly 
to lateral margins ; scutellum concolorous with the disc, in the male sometimes 
slightly yellowish; pleuræ yellow, spotted as in subpusilla ; postnotum 
shining black. Abdomen yellow, each dorsal segment broadly browned 
on base, leaving only a narrow posterior yellow fascia ; hypopygium yellow. 
Legs yellow, apices of fore femora slightly blackened dorsally, apices of 
other femora very indistinctly browned ; all tibiæ and tarsi brownish yell¬ 
ow. Wings almost clear, veins brown, fifth vein indistinct at apex. Squamæ 
and halteres yellow. 
Orbits with 3 pairs of bristles, which decrease slightly in size anteriorly, 
otherwise, generally, bare ; profile almost as in subipusilla; arista thickened, 
the pubescence very indistinct ; cheek with a few marginal hairs, the vibrissa 
very weak. Mesonotum with the bristling as in subpusilla, the area between 
the dorso-centrals bare, or with a few scattered, short hairs, forming two 
irregular rows. Abdomen elongate, narrow; hypopygium normal. Legs 
slender, no bristles on the posterior surface of the mid tibia. Wing venation 
almost as in subpusilla, the small cross vein generally slightly before the 
middle of the discal cell ; last section of the fourth vein about six times 
as long as the penultimate section; last section of fifth vein about one 
and three-fourths the length of the penultimate section, generally evanes¬ 
cent on apical third. 
Length: 1*5—1*75 mm. 
Female : Similar to the male in color etc. ; the ovipositor glossy brown- 
black. The wings are sometimes slightly grayish in this sex. 
Locality : Taihoku. Seven specimens. 
5. Agromyza frontella n. sp. 
Female: Black, subshining. Head yellow, slightly ochreous ; back 
of head, ocellar region, and upper half of orbits blackened ; face brown 
in the depressions where the antennæ lie, the margins yellow; antennæ 
black ; inner mouth margin glossy black ; palpi and proboscis yellowish. 
Mesonotum with brownish pollinosity, scutellum concolorous ; pleur æ 
shining black, the sutures and below wing base brown. Abdomen with 
slight indications of very narrow pale posterior margins to the segments ; 
venter yellowish, most distinct on lateral margins at middle ; ovipositor 
glossy black. Legs black, or black-brown. Squamæ brownish yellow, fringe 
concolorous. Wings clear, veins brown. Halteres yellow, knob white. 
Four orbital bristles present, which are rather weak and decrease 
but slightly anteriorly, the upper two pairs directed backwards, the lower 
