284 THE CANADIAN ENTOMOLOGIST. 



eyes pubescent. Mesonotum with a more or less distinct central 

 line of punctures and the disk covered with short pale hairs; scu- 

 tellum rounded, four distinct marginal bristles present, the disk 

 with short hairs. Legs normal. Wings with third costal division 

 two-thirds as long as second ; veins 3-4 subparallel ; outer cress vein 

 slightly oblique; last section of fifth vein nearly twice as long as 

 penultimate section of fourth. 



Length, 1-5 mm. 



Type: Cat. No. 16002, U.S.N.M. 



Locality: Las Cruces, New Mexico, May 20, 1896, on Yucca 

 angustifolia (T. D. A. Cockerell). 



Paratypes: Sam.e data, and one specimen, Mesilla Park, May 

 7 (T. D. A. Cockerell). Five specim.ens. 



Milichiella urbana, new species. 



Female: Black-brown, slightly shining. Mesonotum opaque 

 brown. Abdomen slightly shining and almost black in color. 

 Legs with tarsi brownish, the remainder black. Wings clear, \-eins 

 brown. Halteres brown. 



Frons at least one-haJf the head width, opaque, orbits very 

 narrow, grayish pollinose, bristles distinct, and extending to the 

 base of antennae; center rows slightly divergent towards ocelli; 

 antennae of normal size; arista slightly pubescent, hairlike, a little 

 longer than length of frons; three bristles above level of m.outh; 

 cheek linear, marginal bristles distinct; palpi and proboscis normal; 

 incision on posterior eye margin distinct. Mesonotum with disk 

 covered with short black setulse and with one pair of prescutellar 

 dorso-centrals; scutellar bristles subequal. Abdominal segments 

 with short discal hairs, apex of last segm.ent setulose. Legs without 

 bristles, their surfaces with short hairs. Wings with veins 2-3 

 slightly divergent at apices, veins 3-4 slightly convergent at apices; 

 last .section of fifth vein slightly longer than penultimate section of 

 fourth. 



Length, 1.25 mm. 



Type in author's collection. 



Locality: Washington, District of Columbia, June 23, 1013, 

 at an open window in center of city (J. R. Malloch). 



