AKT. 17. XORTH AMERICAN PHOEOCERA ALDRICH AND WEBBER. 19 



row; face silvery pollinose; bucca one-fifth the eye height; palpi 

 black at base, the extreme tips yellow; facial ridges bristly on the 

 lowest fourth; antennae nearly as long as the face, the third joint 

 three and one-half times the second, arista thickened on basal third, 

 the penultimate joint short. Thorax black, gray pollinose, marked 

 Avith four black vittae and bearing three dorsocentral macrochaetae ; 

 scutellum black, gray pollinose with three marginal pairs and an 

 apical pair of bristles. Sternopleura with three bristles; pteropleural 

 bristle quite well developed, nearly as long as those of the sterno- 

 pleura. Abdomen destitute of discal bristles; first segment black; 

 second and third black at apex, the remainder gray pollinose; fourth 

 segment shining black, except at sides; marginal macrochaetae 

 stout, the first two segments with one pair, third with marginal 

 row, the fourth bristly on the apical half; abdominal hairs de- 

 pressed; mid tibiae with one stout bristle on the outer front side 

 near the middle; hind tibiae subciliate at most. Third vein with 

 two or three bristles at its base. 



Length 10 mm. 



One male, from Texas (Belfrage). 



7V/y6.— Male, Cat. Xo. 25702, U.S.N.M. 



ZENILLIA LOBEUAE Coquillett. 



Exorista lobeliae Coquillett, Revis. Tachin., 1897, p. 97. — Beimley, Ent. 

 Newev, vol. 33, 1922, p. 22.— Rein hard. Eat. News, vol. 32, 1921, p. 72.— 

 Greene, Proc. U. S. Nat. Mns., vol. 60, art. 10, 1922, p. 11, fig. 18 (pupa- 

 rium ) . 



Facial ridges bristly on the lowest half; four sternopleural bristles 

 are present; palpi yellow; mid tibiae with two bristles on the outer 

 front side near middle. 



Front in male 0.27 (one specimen) , in female 0.33 to 0.36 (in three) 

 of the head width ; face and front silvery pollinose, the sides of latter 

 sparsely covered with short hairs; bucca about one-sixth the eye 

 height ; facial ridges usually bristly on the lower half although some- 

 times only on one side ; both ridges are always ciliate on more than the 

 lowest third ; antennae nearly as long as the face, the third joint four 

 times as long as the second; arista thickened on the basal three- 

 sevenths, the penultimate joint short; palpi yellow. Thorax gray 

 pollinose marked with four black vittae and bearing four dorsocentral 

 macrochaetae; scutellum black, gray pollinose and yellowish at the 

 tip, with two long pairs of marginal bristles and a short pair between 

 them; the apical pair decussate, of moderate size, the disk with one 

 pair of bristles and numerous spiny erect hairs. Sternopleura with 

 four distinct bristles. Abdomen destitute of discal macrochaetae, 

 although the third segment sometimes has a few stout bristles which 

 approach macrochaetae in size ; black, gray pollinose on the last three 



