ZOOL.-VOL. II.] WHEELER— DOLICHOPODIDM. 43 



42. Parasyntormon occidentale {Aldrich.) 



Plate III, Figs. 68 and 69. 



Two male specimens collected on the banks of Hunter's 

 Creek, in the Wind River Mts., Wyo., Sept. 10, 1896, agree 

 very well with the description of Aldrich's Sympycnus occi- 

 dentalis} The species certainly seems to be a Symfycnus 

 at first sight but I would place it with P. asellus, which it 

 closely resembles in the structure of the hypopygium, the 

 overlapping of the second antennal joint, the large size of 

 the third antennal joint, the venation of the wings and the 

 ornamentation of the fore tarsi. On the other hand, the 

 species undoubtedly approaches Sympycnus in having the 

 antennal arista long and inserted near the base of the third 

 joint. The hind feet, of which Aldrich could give no 

 description as they were absent in his specimen, are yel- 

 low, the tarsi blackened from the tip of the first joint. The 

 hind tibiag are slightly incrassated. 



43. Parasyntormon lagotis, sp. nov. 



Plate III, Figs. 70 and 71. 



Male. Length 2.5-3 mm.; length of wing 2-2.5 mm. Palpi small, cov- 

 ered like the rather broad face and the front with thick grayish brown dust. 

 Antennae long, basal joint rather slender at its insertion, smooth, light yellow, 

 black along the dorsal side, without hairs, terminating in a blunt projection 

 on the inner side; second and third joints dark brown or black, the latter 

 long and tapering, with distinctly subapical arista, the former short and over- 

 lapping the third joint on the inside with a prominent thumb-shaped lobe; 

 third joint covered with long pile, arista rather thick, about half as long as 

 the third joint, pubescent. Ground-color of thorax and scutellum metallic 

 green, but so thickly covered with brown dust as to be almost invisible. 

 Abdomen laterally compressed, first segment blackish, second and third seg- 

 ments light yellow with black or cupreous posterior edges; in some speci- 

 mens the dark or cupreous portion of the segment extends some distance 

 forward in the median dorsal line. Remaining segments cupreous. Hypopyg- 

 ium and its appendages very similar to those of P. asellus, except that the 

 posterior hairy pair of appendages are of a lighter color. Pleurae covered 

 with gray dust. Fore coxae entirely yellow, with numerous black hairs on 

 their anterior surfaces. Middle and hind coxae at their bases dark like the 



1 Kans. Univ. Quart., Vol. II, 1894, p. 153. 



