320 J. E. MALLOCH. 



■which is about equal in length with the last section of the fifth vein; costa 

 to end of fourth vein. 



Length : 2"75 mm. 



Female : Similar in coloration to the male, differing only in being 

 rather larger, in having the mesonotum less hairy, and the ovipositor dis- 

 tinctly protruding, and almost identical with that of jiarvicornis. 



Locality: Takao, May 3, 1907. One male and one female. 



This species is very close to parvicornis Loew, differing chiefly in 

 the structure of the head, the chsetotaxy of the mesonotum and the color 

 of the wings. 



10. Agromyza plebeia n. sp. 



This species is so similar to niveipen,nis that it will be sufficient to 

 indicate merely the points of difference. 



The color throughout is more brownish; the orbits have only 5 pairs 

 of bristles ; the tarsi are paler in color ; the wings are not whitish, but have a 

 slightly yellowish tinge, and their veins are distinct ; while in the female 

 the third and fourth veins are more distinctly divergent than in iiiveipennis. 



Length : 2*5 mm. 



Locality: Takao, May 3, 1907. One male and one female. 



1 i . Agromyza nigrita n. sp. 



Female: Deep black, slightly shining. Apex of proboscis brown. Knob 

 of halteres clear yellow. Legs black, the tibiae slightly brownish. Wings 

 clear, veins black. Squamse grayish the margins and fringe almost black. 



Frons opaque, the orbits distinctly glossy at bases of the bristles ; 

 frons about one third the width of the head, parallel-sided ; orbits slightly 

 differentiated from the center stripe, rather narrow, each about one fourth 

 as wide as the center stripe ; four pairs of strong orbitals present, situated 

 about the middle of the orbits longitudinally, decreasing in size anteriorly, 

 the orbits otherwise bare ; frontal triangle not differentiated, ocellar region 

 not shining; antennae moderate in size, third joint rounded, very indistinctly 

 pilose; arista very little swollen at base, and for a very short distance, 

 bare; length of arista equal to from its base to upper orbital bristle; face 

 slightly retreating; cheek linear, but little higher posteriorly than ante- 

 riorly, maginal bristles of moderate strength, vibrissa slightly differentiated. 

 Mesonotum with four pairs of strong dorso-centrals, the anterior two pairs 

 weaker than the posterior two pairs, the pair of bristles between the posterior 

 dorso-centrals distinct, discal setulae not very close, but strong, about 

 10 rows between the anterior dorso-centrals. Abdomen short, broad at base 



