ART. 9 TWO- WINGED FLIES OF TRIBE MILTOGRAMMHSTI — ALLEN 101 



the bend and the small cross vein; one strong costal spine; third vein 

 with three to four bristles which extend more than half way from its 

 base to the small cross vein. Legs black; pulvilli of fore feet usually 

 distinctly longer than last tarsal joint: middle tibia with a single 

 bristle on outer front side near the middle; hind tibia on outside with 

 two to four unequal bristles not extending far beyond the middle. 



Female. — Front at narrowest 0.34 of head width (measurements of 

 six 0.33, 0.33, 0.34, 0.35, 0.35, 0.35, respectively) ; pulvilli short, those 

 of fore feet much shorter than last tarsal joint; genitalia of usual type 

 and largely concealed within abdomen. Otherwise like the male. 



Length, 3.5 to 5.5 mm. 



Tyye and allotype.— Qvii. No. 28163, U.vS.N.M., type, male, Mc- 

 Henry, Mississippi. Allotype, female, Miami. Florida, September 8. 



Host relationships. — Unknown. 



Range. — Virginia, Georgia, Mississippi, Florida. 



Described from the following material: In the National Museum, 

 one male and three females from Georgia: one male from Enterprise, 

 Florida : seventeen females from Miami, Florida, taken on several dates 

 in September (C. H. T. Townsend) ; one male from McHenry, Missis- 

 sippi, September 11, 1922 (H. W. A.). In the collection of Nathan 

 Banks, three females from Falls Church, Virginia, June 2, July 4, and 

 September 13, respectively, labeled "on chinquipin" (N. Banks). In 

 the collection of J. R. Malloch, one male labeled June 24, and one 

 female, June 17, Bancroft, Virginia, from flowers of Ceanothus ameri- 

 canus (W. L. McAtee). 



GYMNOPROSOPA PALLIDA, new species 



Male.^Front at narrowest measured in one specimen 0.36 of head 

 width; inner orbits strongl}^ nan-owed at base of antennae; all of face 

 and front including the vitta silvery pollinose, with dark reflections 

 at the vertex; vitta pale yellow when viewed from above, moderately 

 divergent from base of antennae to vertex, at level of lowest orbitals 

 four to five times width of parafrontal; about nine bristles in frontal 

 row; one reclinate and two proclinate orbital bristles; parafrontals 

 beset with bristly hairs: vibrissae at level of oral margin; antennae 

 black, extending five-sixths distance to vibrissae, third joint four 

 times length of second; arista thickened on basal three-fifths; facial 

 ridges divergent, with only one or two microscopic hairs just above 

 the vibrissae; in profile, bucca narrower than parafacials and equal 

 to one-eighth eye height, front projects over one-third eye diameter, 

 head length at vibrissae much less than at base of antennae; palpi 

 yellow with blackish tips, strongly clavate. Thorax thinly gray 

 pollinose over black, with five obscure black vittae of which the outer 

 two are broader than the three narrow median ones; scutellum with 

 three pairs of marginal bristles, the lateral pair distinctly larger than 



