100 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 68 



male from Opelousas, Louisiana, May 1907; two females from 

 Lafayette, Indiana, labeledJiily 12 and July 16, 1915 (J. M. Aldrich). 

 In the collection of Nathan Banks, one female, July 4, two males 

 and one female, July 12 from honeydew on tulip tree, one female on 

 August 30 from honeydew on tulip tree, and another specimen on 

 May 31, all from Falls Church, Virginia, collected by Nathan Banks. 

 In my collection, one male from Starksville, Mississippi, May 10, 

 1923 (H. W. Chalkley). 



GYMNOPROSOPA FILIPALPLS, new species 



Male. — Front at narrowest 0.355 of head width (measurements of 

 two 0.35 and 0.36 respectively) ; frontal vitta reddish-yellow, its 

 sides parallel or sometimes widest at the middle where the width 

 equals three to five times that of the parafrontal; six strong bristles 

 in the frontal row; one reclinate and two proclinate orbital bristles; 

 parafrontals silvery pollinose over yellow, all of face and bucca 

 silvery; bristly black hairs extend from the orbitals down over para- 

 facials to lower end of eyes; vibrissae not more than half length of 

 second antennal joint above front edge of oral margin; facial ridges 

 bare save for one or two hairs just above insertion of vibrissae; 

 antennae extend almost to vibrissae; second joint dark brown to 

 yellowish; third joint black, three and one-half to five times length 

 of second; arista thickened on basal third; in profile, head length at 

 vibrissae much less than at base of antennae, buccal width ecjuals 

 one-fourth eye height; proboscis two- thirds as long as head height; 

 palpi pale-yellow, nearly filiform. Thorax gray pollinose over black 

 with three shining black vittae of which the outer two are broad, the 

 inner one much narrower; scutellum with three pairs of marginal 

 bristles of which the lateral and apical pairs are equal, both much 

 smaller than the intermediate pair. Abdomen shining black; seg- 

 ments two to four with gray pollen on their basal third; first segment 

 without bristles, second with one lateral and one median marginal 

 pair, the third and fourth each with a marginal row of six strong 

 bristles. Genitalia in repose, almost completely concealed within 

 abdomen; both genital segments black, sparsely covered with bristly 

 hairs of the same size as those of the abdomen, first segment with a 

 subapical row of about four distinct bristles; inner forceps black, 

 sparsely covered with black bristly hairs, bulbous at base, tapering 

 abruptly to slender tips which when viewed from behind are half as 

 long as the basal part, claws moderately divergent at the tips; outer 

 forceps yellow, as long as the inner pair, slender on apical half, slightly 

 clavate at tip, curved gently towards tips of inner forceps. Wings 

 infuscated towards costal margin, anal margin hyaline; section of 

 fourth vein beyond the bend strongly arcuate; posterior cross vein 

 perpendicular to fourth vein which it joins nearly halfwa}' between 



