52 Psjjche [April 



This species will "run down" to angulatal^oew in my table of spec- 

 ies in this genus/ but may be readily separated from it by the 

 characters of the wing venation. 



Agromyza albidohalterata sp. nov. 



Male: Black, shining. Frons with center stripe reddish yellow, 

 ocellar region, and orbits except their lower portions black; anten- 

 nae reddish yellow; arista brown; face and cheeks grayish yellow, 

 the former slightly blackened on center and mouth margin; pro- 

 boscis yellow; palpi brownish; back of head black. Thorax with- 

 out any yellow markings, the suture between upper portion of 

 pleurae and mesonotum brownish, no distinct surface pollinosity. 

 Abdomen more distinctly shining than thorax, the segments uni- 

 colorous black. Legs black, knees brownish; all tarsi yellowish 

 except at apices. Wings clear, veins brown. Squamae whitish, 

 margins and fringes grayish. Halteres yellow, the knobs white. 

 All bristles black. 



Frons nearly half the width of head, orbits distinct, each about 

 half as broad at its broadest part as is center stripe at same part; 

 orbital bristles situated close to inner margin of orbits, five pairs 

 present, the upper pair rather weak, the others becoming succes- 

 sively weaker towards anterior margin, the last (anterior) pair very 

 weak, anterior three pairs incurved; no distinguishable orbital 

 hairs; antennae rather small, third joint rounded, its surface with 

 white pile; arista rather thick, its length about equal to anterior 

 width of frons, pubescence very short; cheek nearly twice as high 

 as third antennal joint and half as high as eye, marginal hairs weak, 

 vibrissa not well differentiated; height of eye one and a third times 

 its length. Mesonotum with two pairs of very weak dorso-central 

 bristles, the disc covered with rather closely placed hairlike setulae; 

 scutellar bristles weak, the pairs subequal in length. Abdomen 

 slightly longer than thorax, the segmentation very distinct, sur- 

 face hairs weak but numerous; hypopygium normal. Legs normal 

 in shape; mid tibiae without discernible posterior bristles. Wings 

 normal in shape; first costal division more than three fourths as 

 long as second; third vein ending midway between apex of fourth 

 vein and apex of second; fourth ending almost exactly at apex of 

 wing, these three veins distinctly divergent on their last section; 



'See Ann. Ent. Soc. Amer., Vol. 6, 1913, p. 271. 



