ART. 9 TWO-WINGED FLIES OF TRIBE MILTOGRAMMINI ALLEN 53 



segment; first genital segment nearly bare save for subapical row of 

 small bristly hairs; second genital segment and the base of inner 

 forceps densely covered with fine bristly hairs; inner forceps in lateral 

 view tapering somewhat abruptly to the middle and then more 

 gradually to nearly straight, strong tips; from the rear the claws 

 appear conical and are moderately divergent from near the base; 

 outer forceps yellowish, shorter than the inner pair, with spoon- 

 shaped tips; fifth sternite enlarged and possessing a broad U-shaped 

 cleft. Wings hyaline; fourth vein beyond the bend moderately 

 arcuate, nearly parallel to hind cross-vein; last section of fifth vein 

 distinctly less than half the preceding section; third vein bristly 

 at least half way to the small cross-vein. Legs black; first four 

 joints of front tarsus with several long slender erect hairs on outside 

 (pi. 3, fig. 19) ; middle tibia near its middle with encircling ring of one 

 weak and two strong macrochaetae; hind tibia on outside with a row 

 of unequal bristles extending from base to apex. 



Female. — Front at narrowest 0.36 of head width (measurements of 

 five 0.35, 0.35, 0.36, 0.37, 0.39); inner orbits nearly straight and 

 parallel, scarcely more nearly approximated at base of antennae 

 than elsewhere; third joint of antennae five to six times length of 

 second. Fore tarsus without long erect hairs on the outside. Other- 

 wise, save for the usual differences of external genitalia, like the male. 



Length, 5.0 to 6.5 mm. 



Range. — Maine, New Hampshire, Vermont, Massachusetts, Con- 

 necticut, New York, New Jersey, Maryland, District of Columbia, 

 Virginia, Pennsylvania, Ohio, Michigan, Wisconsin, Colorado, Idaho, 

 California, Europe. 



Host relationslii'ps. — Unknown . 



I have examined material from the following localities. Two 

 specimens from Franconia, New Hampshire (C. H. T. Townsend) ; 

 one, Lexington, Massachusetts; two, North Saugus, Massachusetts 

 (D. C. Clemons) ; three, Waterbury, Connecticut (C. H. T. Townsend) ; 

 a large series from Slaterville, Duck Lake, and McLean Bogs, New 

 York (L. S. West) ; two, Plummer Island, Maryland (W. L. McAtee, 

 H. L. Vierick); two. Rock Creek, District of Columbia (C. H. T. 

 Townsend) ; one, Beltsville, Maryland (N. Banks) ; one, Great Falls, 

 Virginia (H. W. Allen) ; one. Difficult Run, and one, Dead Run, Virginia 

 (R. C. Shannon); one, Ravensworth, Virginia (C. H. T. Townsend); 

 one, Battle Creek, Michigan (J. M. xildrich) ; three, Polk County, 

 Wisconsin (Baker); two. Peaceful Valley, Colorado (Cockerell); one, 

 Tennessee Pass, Colorado, three, L. Metigoshe, Turtle Mountains, 

 North Dakota, one, Moscow, Idaho, and one, Mount Lowe, California 

 (J. M. Aldrich) ; one, Humboldt County, California (H. S. Barber) ; 

 all in the collection of the National Museum. In the collection of the 

 Boston Natural History Society, I have seen specimens from several 



