310 A nnals Entomological Society of A merica [Vol . VI , 



with rather weak dorsal bristle, and weak apical marginal hairs; third 

 joint large, distinctly longer than broad, covered with distinct pale 

 pile; arista brown, tapering, distinctly and thickly covered with short 

 pubescence, which is about as long as basal diameter of arista; length 

 of arista equal to three times the length of third antennal joint; face 

 subshining, black, rather long, concave in profile, central keel slight, 

 but sharp; cheek black, almost linear, slightly higher at posterior mar- 

 gin. Marginal bristles weak; vibrissa weakly differentiated, eye 

 distinctly higher than long; proboscis yellow; palpi black, normal. 

 Mesonotum glossy black, thickly covered with rather long setulas, 

 three pairs of dorso-centrals present, the anterior pair weak; the pair of 

 bristles between the posterior dorso-centrals as long as second pair 

 of dorso-centrals; pleurae glossy black, with a slight indication of pale 

 color along upper margin, and distinctly pale below wing base; squamae 

 yellowish white, fringe white; postnotum and scutellum concolorous 

 with mesonottrai, the apical pair of bristles on scutellum as strong as 

 basal pair. Abdomen glossy black, similar in shape to that of par- 

 vie ornis. Wings clear; first costal division almost one-half as long as 

 second, inner cross vein at slightly beyond middle of wing and at dis- 

 tinctly more than its own length from inner; last section of fifth vein 

 distinctly shorter than penultimate section. Halteres white. 

 Length 2 mm. 



Originally described from District of Columbia (Osten 

 Sacken). Aldrich gives it as from Nebraska, but probably 

 refers to another record of the species. I have before me 

 only one specimen which is referable to this species. 



Locality: Plummers Island, Maryland, August 3, 1912 

 (J. R. Malloch). 



Food-plant unknown. 



35. Agromyza inconspicua, new species. 



Male: Frons slightly over one-third the width of head; black, 

 center stripe opaque, orbits and ocellar region shining; four orbital 

 bristles present, orbits otherwise almost entirely bare; antennas black, 

 brownish at base; third joint small, rounded, not as long as broad, 

 arista slightly swollen and tapering at base, pubescence very short, 

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

 black, concave in profile, slightly produced at mouth margin; center 

 keel rounded; cheek brownish yellow, twice as high at posterior as at 

 anterior margin, at highest part one-third as high as eye, marginal 

 bristles of moderate strength, vibrissa slightly differentiated; proboscis 

 yellow; palpi black; occiput linear on upper half. Mesonotum shining 

 black, three pairs of dorso-centrals present, the anterior pair weak and 

 anterior to the suture a setula which may, in other specimens, be strong 

 enough to be classed as a dorso-central ; disk very sparsely covered 

 with setulas, only three irregular rows between the dorso-centrals; 

 no distinct bristles between the posterior pair of dorso-centrals; pleurae 



