101 
bristles in 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 1 almost as long as the face, arista thickened on the 
basal third or fourth, the penultimate joint as broad as long; 
thorax gray pollinose, marked with four black vittae, scutellum 
bearing four marginal pairs off macrochse tee; 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 S mm. St. 
Louis. Mo.; Oswego, Kaus. : and Fort Worth, Tex. Four 
males and two females. Type No. 3001, TJ. S. National 
Museum ceratom ice n. sp. 
Genus EUPHOROCERA Town. 
Euphorocera Towiisend, Trans. Amer. Ent. Soc, Vol. XIX. p. 112; May, 1892. 
Our species have two or more macrochaetae on the front side of each 
middle tibia near the middle, and the hind tibiae outwardly are ciliate 
or subciliate: 
1. Head at the vibrissas noticeably shorter than at base of antenna?, 
palpi yellow, three sternopleural macrochaetae 2. 
Head at the vibrissa- as long as at base of antenna', 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 macrochaetae 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 1 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 vittae, four post- 
sutural and two large and sometimes two small sternopleural 
macrochaetae. 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 
macroclnTta* except its extreme base; front pulvilli of male 
longer than the last tarsal joint; wings hyaline, third vein bear- 
ingfrom four to eight bristles at the base, fourth 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 21, 1882, by Mr. John Murdock. 
* Type No. 3602, U. S. National Museum gelida n. sp. 
