FORMOSAN AGROM YZIDAE. 
321 
the sides tapering much to the apex; ovipositor projecting, circular in cross 
section, not elongated. Legs strong, mid tibia with distinct posterior bristles. 
Wing venation as fig. 12. 
Length: 2*75—3*5 mm. 
Locality: Pilam, August, 1912. 
Paratypes : Takao, April and May, 1912. Three females. 
12. Agromyza latipennis n. sp. 
Male: Black, shining. Apex of proboscis brownish. Halteres yellow, 
the knobs white. Legs black, the tibiae and tarsi brownish-black. Squamae 
brown, the margins and the fringes dark brown. Wings clear veins black. 
Frons slightly less than one third the width of the head, almost paral¬ 
lel-sided, orbits slightly differentiated from the central stripe, glossy at 
the bases of the bristles, otherwise subopaque; ocellar triangle distinct, 
glossy ; four pairs of orbital bristles present, the two upper pairs backwardly 
directed the two lower pairs inwardly directed, the bristles decreasing much 
in length anteriorly, the anterior pair mere hairs, orbits otherwise bare; 
antennae above the average in size, third joint rounded at apex, distinctly 
pilose; arista tapering, rather thick, the pubescence distinct though short; 
length of arista equal to from its base to upper orbital bristle ; face distinctly 
retreating; cheek linear, slightly higher posteriorly. Mesonotum with 3 
pairs of dorso-centrals, the anterior pair weak ; cephalad of the anterior pair 
of bristles there is sometimes a setolose hair stronger than the discal setulæ, 
which is posterior to the suture; the pair of bristles between the posterior 
dorso-centrals distinct ; discal setulæ rather numerous, about 8 rows between 
the anterior dorso-centrals. Abdomen short and broad, the surface with 
rather long brownish hairs ; hypopygium glossy black. Legs normal in shape ; 
the two bristles present on the posterior surface of the mid tibia. Wing very 
broad, veins fine and very distinct : fig. 18. 
Length: 1*25 mm. 
Locality: Takao, 800 m. alt., March 81, 1907. 
Female: Similar to the male in coloration and chætotaxy ; the ovi¬ 
positor is highly glossy, and distinctly protruding. In size slightly larger 
than the male. 
Allotype and paratype : Same data as the type. 
13. Agromyza koshunensis n. sp. 
Male: Black, shining. Frontal lunule white pollinose ; center stripe of 
frons opaque, orbits and ocellar region shining ; antennæ and palpi black ; 
Annales Musei Rationalis Hungarici. XII. 
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