101 



l)ristles iu the female, none in the male; frontal bristles 

 descending" slightly below the arista, cheeks one-sixth as broad 

 as the eye-height, facial ridges bristly on the lowest third, 

 antenna' almost as long as the face, arista thickened on the 

 basal third or fourth, the penultimate joint as broad as long; 

 thorax gray pollinose, nnirked with four black vittsie, scutellum 

 bearing four marginal pairs of macrochiTeta^ ; abdomen on last 

 three segments wholly gray pollinose, the hairs depressed; 

 wings hyaline, base of third vein bearing two bristles, bend 

 of fourth vein not appendiculate, this vein beyond the bend 

 strongly bent inward; calypteres white, front pulvilli of male 

 longer than the last tarsal joint; length, 5.5 to 8 mm. St. 

 Louis, Mo.; Oswego, Kaus. ; and Fort Worth, Tex. Four 

 males and two females. Type No. 3G01, U. kS. National 

 Museum ceratomia' n. sp. 



Genus^KP-PHOROCERA. -T©w». p<^5v.'>^j 



Euphorocera Townseud, Traus. Amer. Eut. Soc, Vol. XIX, p. 112; May, 1892. 



Our species have two or more macrochfetai on the front side of each 



middle tibia near the middle, and the hind tibife outwardly are ciliate 



or subciliate: 



1. Head at the vibrissa^ noticeably shorter than at base of antennoe, 



palpi yellow, three sternopleural macrochiietiTe 2. 



Head at the vibrissa' as long as at base of antenuii^, palpi black; 

 black, apex of scutellum broadly yellow; front in the male four- 

 fifths, in the female one and one fifth times, as wide as either 

 eye, two pairs of orbital bristles in the female, wanting in the 

 male, sides of front gray pollinose, destitute of macroch;eta' out- 

 side of the frontal bristles, the latter descending below the 

 arista, cheeks one-third as broad as the eye-height, facial ridges 

 bristly on the lower two thirds, antenna? six-sevenths as long as 

 the face, the third joint in the male three, in the female two and 

 one-fourth, times as long as the second, arista thickened almost 

 to the middle, the penultimate joint slightly longer than broad; 

 thorax gray pollinose, marked with four black vitt;e, four post- 

 sutural and two large and sometimes two small sternopleural 

 macrochaetse, scutellum bearing four marginal pairs; abdomen 

 shining, bases of the last three segments gray pollinose, hairs 

 rather long and suberect, first segment bearing marginal, the 

 next two with discal and marginal, the fourth covered with 

 macrochteta' except its extreme base; front pulvilli of male 

 longer than the last tarsal joint; wings hyaline, third vein bear- 

 ing from four to eight bristles at the base, fi)urth vein beyond the 

 bend strongly arcuate, apical cell narrowly open; calypteres 

 white; length, 7 to 9 mm. Point Barrows, Alaska. One male 

 and two females collected June 24, 1882, by Mr. John Murdock. 

 Type No. 3G02, U. S. National ^luseum gcHda u. sp. 



I'^rai) 



