26 ENTOMOLOGICAL NEWS [Jan., '15 



hairs on the front surface; fore femora short, pale yellow, with a few 

 long pale bristles below near the base; fore tibiae yellow, longer than 

 their femora, short-haired; fore tarsi long and slender, blackened al- 

 most from the base, the metatarsi one and one-fourth times as long 

 as their tibiae, remaining joints taken together only about one-third 



as long as the first. Middle 

 legs extremely slender (fig. 3), 

 femora rather short, of normal 

 size at base but tapering rap- 

 idly so as to be very slender in 

 the middle, the knee large and 

 contorted ; middle femora black 

 at base, pale yellow from be- 

 fore the middle; middle tibiae 

 extremely long and slender, 

 over 5 mm. long, wire-like. 



Fig. 3.— Middle leg of Sciapus noveboracensis black except extreme base, 



glabrous; middle metatarsi still 

 more slender, two-thirds as long as their tibiae with a row of short 

 spines below towards the tip, black; second joint black, slender but 

 short, with long hairs above; third joint short, flattened, widened at tip, 

 fringed with long hairs on one edge; fourth joint short, flattened, wider 

 than the third, bent or twisted, with only a few short hairs; fifth joint 

 short, yellow at base and black at tip, bent, not so greatly flattened as 

 the two preceding joints; third and fourth joints yellow. Hind femora 

 yellow, long and slender with a few long yellow hairs above at base ; 

 hind tibiae a little longer than their femora ; hind tarsi shorter than the 

 hind femora, black from before the middle of the first joint, first joint 

 longer than the remaining four together, somewhat thickened in the 

 middle. 



Halteres yellowish ; tegulae pale yellow with a narrow black tip and 

 with long white cilia. 



Wings grayish hyaline, long and rather narrow. 



9 . Length 4 mm. Differs from the male in having the pollen of 

 the face silvery white; thorax and abdomen covered with an equally 

 thick coat of coarse yellowish pollen ; all legs normal ; all tarsi black- 

 ened from the base of the second joint. 



Described from one male and one female, taken at Gowanda, 

 New York, June 8th. Type in the author's collection. 



This belongs to the same group of species as 5. tener and 

 filipes of Loew, the middle legs of which are slender; the 

 hypopygium is formed about alike in all three species and the 

 wings are also very much alike. 



