316 J. R. MALLOCH. 



mainder of antennse pale yellow ; arista brown ; palpi and proboscis yellow. 

 Disc of mesonotum broadly opaque gray, tbis color extending less distinctly 

 to lateral margins ; scutellum concolorous with the disc, in the male sometimes 

 slightly yellowish ; pleura; yellow, spotted as in suhfusilla; 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 tibiae and tarsi brownish yell- 

 ow. Wings almost clear, veins brown, fifth vein indistinct at apex. Squamae 

 and halteres yellow. 



Orbits with 3 pairs of bristles, which decrease slightly in size anteriorly, 

 otherwise, generally, bare; profile almost as in suhpusilla; arista thickened, 

 the pubescence very indistinct ; cheek with a few marginal hairs, the vibrissa 

 very weak. Mesonotum with the bristling as in suhpusilla, 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 suhpusilla, 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 nnn. 



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 antemite lie, the margins yellow; antennae 

 black ; inner mouth margin glossy l)lack ; palpi and proboscis yellowish. 

 Mesonotum with brownish pollinosity, scutellum concolorous ; pleurae 

 shining l)lack, 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-l)rown. Squamae brownish yellow, fringe 

 concolorous. Wings clear, veins brown. Halteres ^^ellow, knob white. 



Four orbital bristles present, which are rather weak and decrease 

 but slightly anteriorly, the upper two pairs directed backwards, the lower 



