56 An7ials Entomological Society of America [Vol. VI, 



latter rather long and placed high up almost on the outside; hind coxae 

 with one black bristle on the outside; front tibiae with a row of black 

 bristles above, these bristles do not reach either the base or apex; front 

 tarsi about one and one-half times as long as their tibiae, the metatarsi 

 two-thirds as long as the tibiae, second joint half as long as the first; 

 middle tarsi a little longer than their tibiae, the first joint one-half as 

 .long as the tibiae; middle and hind femora with a black bristle near the 

 tip on the outside; hind tarsi fully as long as their tibiae, with the second 

 joint longer than the first. Wings grayish hyaline; third and fourth 

 veins only very slightly convergent at the tips. 



Described from one male which I took at Lancaster, Erie 

 Co., N. Y., on Aug. 15, 1909. 



Note. — This species resembles setosa in having a bristle on 

 the outside of each middle and hind coxae, and near the tip of 

 each middle and hind femora; also in having bristles on the 

 hind margin of all the segments of the abdomen. The hypo- 

 pygium is smaller than that of any other species of the genus 

 that I have seen. There are three or four bristly hairs on the 

 top of the first joint of the antennae near the tip, but this joint 

 is hardly hairy on top in the same way that it is in some of the 

 genera of Dolichopodidae. 



28 Neurigona ciliata n. sp. 



Figure 29. 



Dorsum of the thorax black ; abdomen yellow with black bands ; 

 hypopygium small, black; front tarsi black, fringed on each side with 

 short black hairs; wings strongly tinged with brown in front of the 

 third vein. Length 4>^ mm. 



Male: Face and palpi silvery white, the former very narrow, the 

 eyes almost touching on the center of the face; proboscis and antennae 

 yellow, arista yellowish brown; front and occiput greenish gray, with 

 white pollen; frontal bristles black, orbital cilia and post- vertical 

 bristles whitish. Thorax black, shining on the dorsum, with white 

 pollen, this pollen thickest on the flattened space before the scutellum; 

 humeri, prothorax, lateral edges of the dorsum, scutellum except 

 base, metathoracic-epimera, and a large triangular spot above the 

 middle coxae yellow. Abdomen yellow, with poorly defined, wide black 

 bands on the dorsum at the base of segments two, three, and four, and a 

 small spot at base of fifth; hairs black on the first four segments, pale 

 on the fifth and on the venter; venter yellow; hypopygium small black 

 shining, appendages testaceous. Legs pale yellow; front coxae with pale 

 hairs and bristles, one or two of these bristles black; middle coxae with 

 black hairs and bristles; front tarsi black, fringed on each side with 

 short coarse, dense hairs, giving them the appearance of being flattened, 

 these hairs hardly as long as the diameter of the tarsi; front metatarsi 

 about equal to their tibiae in length, fourth joint hardly twice as long 

 as wide; middle metatarsi four-fifths as long as their tibiae; middle legs 



