58 PROCEEDINGS OF THE NATIONAL MUSEUM. vou 63. 



Length 10 mm. 



Described from four male specimens: one from Higuito, San 

 Mateo, Costa Kica (Pablo Schild) ; three Alajuelo, Panama, April 

 7, 1911 (August Busck). 

 ry/>e.— Male, Cat. No. 25707, U.S.N.M., from Higuito. 



PHOROCERA CLARIPENNIS Macquart. 



riioroccra clariiwiinis Macquart, Dipt. Exot., Suppl., vol. 3, 1849, p. 209. 

 Eurygaster septentrionaUs Walker, in Lord's Naturalist in Vancouver 



Island, vol. 2, 1866, p. 339. 

 Fhoroceia edicarilsii AViluston, in Seudder's Butterllit'S of New England, 



vol. 3, 1889, p. 1921. 

 PJiorocera lophyri Towsend^ Trans. Amer. Ent. Soc, vol. 19, 1892, p. 112. 

 Euphorocera claripennis Coquillett, Tech. Bull. No. 7, Div. of Ent., 1897, 



p. 102.— HowARi., Ins. Book, 1902, p. 88. fig. 

 Exorista petiolata Coquiixett, Tech. Bull. No. 7, Div. of Ent., 1897, p. 98. 

 Podotachina vibrissata Brauer and Bergen stamm, Zweifl. Kaiserl. Mus. 



Wien, pt. 5, 1891, p. 351. 

 Neopliorocera edicardsil Townsend, Proc. Ent. Soc. Wash., vol. 14, 1912, 



p. 163. 



3Iale. — Front of male 0.30 of headwidth (average of four, 0.30, 

 0.30, 0.30, 0.29), usually silvery but often yellowish near vertex; face 

 silvery, the sides at narrowest part as wide as third antennal joint; 

 facial ridges bristly nearly to the base of antennae; bucca one- fifth 

 the eye height; palpi yellow, very slender, bearing many fine fong 

 black hairs; antennae black, often somewhat yellow basally, as long as 

 the face, the third joint five times the second ; arista thickened on the 

 basal three-sevenths, penultimate joint short. Thorax black, gray 

 pollinose marked with four black vittae, sometimes there are five 

 vitae posterior of the suture; four dorsocentral macrochaetae ; 

 scutellum grayish, often yellowish, bearing three pairs of long and a 

 shorter apical pair of marginal bristles; disk usually bare. Sterno- 

 pleura with three bristles. Abdomen normal, first segment black, 

 the remaining segments shining black except the wide basal margins, 

 which are gray ; sides of the second and the apex of the fourth segment 

 sometimes brownish. No discal macrochaetae on the intermediate 

 segments; marginal macrochaetae on the first three, the fourth with 

 two or three rows on the apical half to three-quarters ; bristly hairs of 

 the abdomen usually depressed ; rarely erect. Legs black, mid tibiae 

 with two or more (usually three) bristles on the outer front side near 

 the middle ; hind tibiae subciliate at most. Wings hyaline, the fourth 

 vein usually with an appendage or distinct fold at its bend, third vein 

 with four to six bristles at its base. Genital segments black; the 

 united inner forceps broad at base, suddenly narrowing to a slender 

 curved tip and with fine black hair behind, but not in tufts; outer 

 forceps short, scarcely half as long as the inner ones, in the form of 

 broad, shining plates, which end in a rounded, blunt point. 



