84 PROCEEDINGS OF THE NATIONAL MUSEUM. tol. 63. 



PHOROCERA MARGINALIS, new species. 



Front of male, 0.315, and in the female, 0.333 and 0.342 of the head 

 width, golden pollinose, the face and front nearly of equal width: 

 parafacials and bucca silvery, the latter one-sixth the eye height; 

 palpi yellow; eyes faintly hairy; facialia bristly on the basal three- 

 fourths and just reaching the lowest f rentals; antennae nearly as 

 long as the face, third joint in male about seven times the length of 

 the second, in the female slightly less; arista thickened on the basal 

 third, the penultimate joint short. Thorax densely yellowish polli- 

 nose, marked with four black vittae, the outer ones broken at the 

 suture and twice as broad as the inner ones, which are very narrow, 

 though distinct; four dorsocentral macrochaetae ; scutellum thick, 

 yellowish pollinose, with three long lateral and one shorter upturned 

 apical pair of bristles. Sternopleura with two strong bristles and 

 two much weaker ones (hardly more than hairs). Abdomen desti- 

 tute of discal macrochaetae, first and second segments bearing margi- 

 nal macrochaetae, the third with a row, the fourth in female with a 

 double row, one on the apical three-fourths and the other at apex; in 

 the male the fourth segment has but a single row at its apex, the 

 basal two-thirds being bare of macrochaetae; first segment black, the 

 remaining ones yellowish pollinose excepting the apices of the second 

 and third, which are black; fourth segment wholly yellowish polli- 

 nose. Legs black, mid tibiae with one bristle on the outer front side 

 near the middle; hind tibiae weakly ciliate. Wings hyaline, apical 

 cell narrowly open or closed; third vein with two or three bristles 

 at its base. 



Length 6 to 7 mm. 



Described from one male and two females reared by C. L. Scott, 

 from MacnHa punctolineata Packard, Brownsville, Texas. 



Tijpe.—M^lQ, Cat. No. 25727, U.S.N.M. 



PHOROCERA HALISIDOTAE. new species. 



Front of male 0.300 and in the female 0.360 of the head width; 

 front golden pollinose, the face silvery; facial ridges bristly nearly 

 to the base of antennae ; bucca one-fifth the eye height ; palpi yellow ; 

 antennae black, as long as face, third joint in male six times and in 

 the female five times the length of second; arista thickened on the 

 basal fourth, the penultimate joint short. Thorax black, gray polli- 

 nose, marked with four black vittae; four dorsocentral macrochaetae 

 present; scutellum broadly yellow, bearing three long marginal and 

 one short upturned apical pair of bristles. Sternopleura with four 

 bristles. Abdomen black, first segment entirely so, the remaining 

 ones gray pollinose on their basal half ; apex of the fourth segment 

 black. No discal macrochaetae, second segment with one pair me- 



