FOR.MOSAN AOHOMYZlDAi;. 831 



pubescent, its eiitii-e leii^tli al)Oui equal to 4 times that of antenna, and 

 nearly twice as long as width of frons at anterior margin; cheek al)out 

 one sixth as high as eye, marginal hairs rather strong, upcurved above, 

 vibrissa differentiated; face almost straight. Mesonotum with 2 pairs of 

 dorso-centrals, the anterior pair weaker than the posterior pair; discal 

 setulae weaker than in Snider i, and carried almost to the posterior margin 

 of disc. Abdomen broader than in Sauteri. Legs strong; mid tibia with the 

 posterior setuh« weak. Inner cross vein at below end of first vein and at 

 middle of discal cell; last section of fourth vein 81 ^ times as long as penul- 

 timate section; veins 8 and 4 slightly divergent at apices; last section of 

 fifth vein very slightly shorter than penultimate section ; sixth vein leaching 

 over three fourths to wing margin. 



Length : 2"o mm. 



Type: Pilam, August, 191*2. 



A single example from Tainan, April, 1912, in which the outer cross 

 vein is absent on one wing, appears to belong to this species. 



2(). Agromyza atomella n. sp. 



Male: Glossy l)lack. Frontal stripe opaque. Squamte biown, fringe 

 blackish. Wings clear, veins black. 



Frons one-third the width of head, convergent anteriorly ; oibits 

 distinct, narrow, 4 pairs of orbitals present, the upper 2 pairs moderately 

 strong, the lower 2 pairs weaker, incurved ; hairs on orbits weak ; frontal 

 triangle broad, reaching to middle of frons; antennae normal in size ; arista 

 as long as length of frons ; cheek about one sixth as high as eye, marginal 

 hairs weak, vibrissa slightly differentiated. Mesonotum with 2 strong pairs 

 of dorso-centrals; discal setulae of moderate strength. Abdomen broadly 

 ovate. Mid tibiae with the posterior setulae weak. Liner cross vein at one 

 third from apex of discal cell and at slightly beyond end of first vein; veins 

 8 and 4 suljparallel on apical sections ; last section of fifth vein about three 

 fourths as long as penultimate section. 

 Length: 1—1*75 mm. 

 Type: Pilam, August, 1912. 



Para types: Tainan; Takao ; Pilam; Anping. Twenty specimens. 

 This species is variable in the situation of the cross vein, and the 

 course of the third and fourth veins, which are sometimes divergent on 

 their apical sections. 



