FOK.MOSAN AGKOMYZIDAK. '6'11 



penultimate section; and tlic size of tlic s])ccini(-ns averages liaicly 

 over 2 mm. 



Type: Chip-Cliij), Fcln'uaiy. 



Paratypes: Chip-l'iiip ; Tainan; and Takao, various dnte-^. Fifty-two 

 specimens. 



Home of the exani])les show considciabK' variation in the situation 

 of the inner cross vein and rarely it is very slightly beyond the middle 

 of the discal cell. I consider, however, that there is only one species in the 

 series before me, as in some species . of this group there is considerable 

 variation. 



:20. Agromyza anguliceps n. sp. 



Female: Glossy l)lack. Center stripe of frons opaque l)lack ; apex of 

 proboscis yellowish. Pleurae and ventral sui'face of abdomen subopaque 

 black. Legs glossy black. Wings clear, veins black. S(iuamae grayish, fringe 

 brown. Halteres black the stalks brow'n. 



Frons slightly over one third the width of head; orbits distinct, nar- 

 row, each equal to less than one fourth the width of central stripe, 4 pairs 

 of orbitals present, which are not strong and decrease slightly in length 

 anteriorly, the anterior pair strongly incurved ; a few very short hairs on 

 the orbits in addition to the bristles; triangle distinct, highly glossy, narrow, 

 extending to beyond middle of frons ; antennae inserted well Ixdow middle 

 of profile, small, third joint rounded ; arista bare, swollen at base, the 

 apical portion very thin, entire length about equal to two thirds that of 

 frons; face concave; frons declevitous ; cheek al)Out eipial to one eighth 

 the height of eye, very distinctly produced at anterior angle, its anterior 

 extremity being in vertical line with -the anterior margin of third anlennal 

 joint, marginal hairs weak, vibrissa ■ well differentiated. Mesonotuni with 

 2 pairs of dorso-centrals ; disc with numerous short. hairlik(> setuhe. Ab- 

 domen ovate; ovipositor stout; surface of alxlomen and ovii)ositoi- with 

 numerous hairs. Legs slender; the mid ti!)ial bristles weak l)ut distinct. 

 Inner cross vein at beyond end of first vein and at one third from end of 

 discal cell; last section of fourth vein about (> times as long as penultimate 

 section; veins 8 and 4 slightly divergent: last section of fifth vein two 

 thirds as long as penultimate secti(Mi ; auxiliai-y vein compl(^t(\ 



Length : 2 nnn. 



Type: Tainan, Febiuary. 



This species belongs to the group in wliich the male has the vibirssal 

 angle distinctly produced, and the vibrissae in the form of fasciculi. 



