OF WASHINGTON, VOLUME XII, I'.Ud. 129 



Clementon, New Jerse5\ Three specimens collected by Mr. 

 H. S. Harbeck. 



Type: No. 13096, U. S. National Museum. 







Exorista setinervis, new species. 



Male. Differs from spinipennis, our only other species in which the 

 third vein is bristled almost to the small cross-vein, by lacking the discal 

 abdominal bristles, by having the arista thickened on only the basal 

 fourth, etc. Black, the palpi yellow. Front one-third as wide as either 

 eye, covered with short bristly hairs, frontals descending slightly below 

 the arista, vibrissae inserted at the oral margin, ridges bristly on the 

 lowest third, cheeks one-eighth as wide as the eye-height, antenna- nearly 

 as long as the face, the third joint five times as long as the second. 

 Thorax gray pruinose and marked with four black vitta j , three pairs of 

 postsutural dorsocentral bristles, two sternopleurals, scutellum bears 

 three marginal pairs. Abdomen polished, bases of the second and third 

 segments bluish-white pruinose, first two segments with a marginal pair 

 of bristles, the following two with a marginal row. Front pulvilli longer 

 than the last tarsal joint, middle tibias with only one bristle on the front 

 side near the middle, hind tibiit not ciliate. Wings hyaline, bend of the 

 fourth vein without a stump. Calypteres white. 



Length, 6 mm. 



Clarksville, Tennessee. A single specimen collected June 

 4, 1909, by Mr. A. C. Morgan. 



Type: No. 13097, U. S. National Museum. 



Family 



Leria nebulosa, new species. 



Body black, cross-veins clouded with brown. Head yellowish, sides 

 of the front, the ocellar triangle, and the upper half of the occiput black, 

 covered with a bluish-gray pruinosity; only one vibrissa each side, cheeks 

 on more than the lower half covered with short bristly hairs; antenna? 

 and palpi reddish yellow, proboscis black. Body bluish-gray pruinose, 

 mesonotum marked with five brown vitto>, pteropleura and mesopleura 

 bare, sternopleura densely hairy and with a single bristle; seventh seg- 

 ment of the abdomen reddish yellow. Legs brown, gray pruinose, and 

 tinged in places with yellow. Wings hyaline, small and hind cross-veins 

 clouded with brown. Halteres yellow. 



Length, 5 mm. 



Banff, Canada. A female specimen collected by Mr. N. B. 

 Sanson. 



Type: No. 13098, U. S. National Museum. 



