16 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.63 



LIST OF SPECIES OF THE DISTRICT OF COLUMBIA REGION. 



*M. ameHcana Miillocli. — Common ; has been collected from April 

 24 to June 22. P. I. 



♦MINETTIA BUCHANANI Malloch, new species. 



Male. — Similar in color to magna^ but the palpi are black, and the 

 abdomen is densely gray pruinescent with a narrow fuscous fascia on 

 middle of third and another on fourth tergites. The general habitus 

 is similar to that of magna, but the arista has the hairs shorter than 

 width of third antennal segment, the scutellum is not subtnmcate 

 apically between the bristles, there are more outstanding setulae in 

 center of mesopleura which extend to below the bristle, and the size 

 is smaller. 



Length, nearly 5 mm. 



Type. — Beltsville, Maryland, May 21, 1922, swept from herbage in 

 woodland (J. R. Malloch). Cat. No. 26389 U. S. N. M. 



*M. glauca Coquillett.— Great Falls, Virginia, May 19, 1915, Mc- 

 Atee; Virginia near Plummer Island, May 20, 1914. R. C. Shannon: 

 Maryland near Plummer Island, June 5, 1903, W. V. Warner ; Belts- 

 ville, Maryland, May 2, 1915, on flowers of Aronia arhutifolia Mc- 

 Atee ; Marlboro, Maryland, May 13, H. S. Barber. 



M. lupulina Fabricius. — Very common; the extreme dates of col- 

 lection are May 14 and October 5; has been taken on flowers of 

 Ceanothus americanus, and Tephrosia virginica. P. I. 



*3I. magna Coquillett. — This, the largest local species of the fam- 

 ily, is fairly common; it has been collected from May 31 to September 

 17. V. P. I. 



M. obsaura Loew. — Very common ; the season as at present known 

 runs from April 25 to June 29; comes to light; and has been col- 

 lected on the ffowers of Ai^incus aruncus. P. I. 



M. ordinaria Melander. — Plummer Island, Maryland, August 26. 

 1902, E. A. Schwarz and H. S. Barber; Chain Bridge, Virginia. 

 September 18, 1921, Malloch; Washington, District of Columbia, 

 August 13, N. Banks. 



M. puncticeps Coquillett. — Plummer Island, Maryland, May 25, 

 1902, H. S. Barber; May 23, 1914, June 8, 1914, at light, R. C. 

 Shannon; June 15, 1905. D. H. demons. 



M. valida Walker. — Has been collected several times at dates 

 ranging from May 1 to October 14; comes to light. P. I. 



Genus SAPROMYZA Fallen. 



KEY TO SPECIES. 



1. Wings black, with numei'ous small clear spots, the most conspicuous one at 

 apex; head, thorax .-md apical abdominal segment with numerous small 



