•i2() PKOCKEDJNGS OF TlllC NATIONAL MUSEUM. vol.xxi. 



front femora larj>ely, ai)ices of tlic i)ostcrior ones, and the hind tarsi, 

 brown; iirst Joint of front tarsi bearing? a fringe of veiy short bhick 

 bristles on the n[)])('r side, extending? from near the- base to beyond tlio 

 middle, second Joint noticeably dilat(;d. Wings hyaline, last secticm 

 of fonrth vein gently sinuate, apex of first posterior cell slightly wider 

 than half the length of the liind crossvein. Halteres yellow. 



Female: Saine as the male with these excei)tions: Third Joint of 

 antennae oval, only slighlly longer than broad. Abdomen not white 

 pruinose, genitalia concealed. Front (;oxae and front femora wholly 

 yellow; front tarsi destitute of a, fringe of black bristles, none of the 

 Joints dilated. 



Length, 4 to 5 mm. One specimen of ea,ch sex (No. 747). 



Type.—^io. 3!>S8, U.S.N.M. 



DOLICHOPUS NITIDUS Fallen. 

 DdliclKiiiiis iiilidiiH I''ai.i.kn, l>i|it.. Simc, Ddlicli,, 1S2;>, ]>. 12. 



Two female s])ecimens (No. 747) agreeing well with th«». deseri])tions 

 <d' this lOuropcan speci<'s, but the absence- of a male specimen throws a 

 certain degree of <loubt upon the correctness of this identilieation. 



Family SYIU'UIDAF. 

 MICRODON AURICOMUS, new species. 



Male and Icniale: Head greenish bhus its hairs yellowish-white, 

 those of fh(< front black; antennae brownish-black, ai)ex of second 

 Joint aiul the arista brownish-yellow, the (irst Joint as long as the 

 second and tliird taken togi^tlMM'. Hody very robust, green, middle 

 of ines()iio!uMi sonu'tinuis nnirked with three purple vittao, each 

 boxlcrcd with brassy; hairs of body yellow, usually a few in (tenter of 

 nu'sonotum, and on the bases of the second and third abdominal seg- 

 ments, black. Legs brownish black, hairs of femora, of inner side of 

 tibiae, and of the tarsi, chi(^lly black, those on remainder of tibiae, 

 yellow. Wings hyaline, veins beyond base of discal cell sometimes 

 bordered with brown. Halteres yellow. 



Length, 12 to 1(5 mm. Two males and one female (No. 708). 



Ty^^e.— No. 3!)S9, U.S.N.M. 



PARAGUS FASCIATUS, new species. 



Male: Head black, the frontal triangle and tiie face light yellow, 

 vertical triangle i)oli8hed, the portion in front of the lowest ocellus 

 opa(pu', yellowish gray [)ruinose; antennae brownish black, the arista 

 and lower portion of the third Joint except at its apex broadly brown- 

 ish-yellow, the third Joint sublanceolate, neaily twice as long as the 

 Iirst two taken together. Thorax i)olislied, greenish-black, its hairs 

 yellow, two gray pruinose vittae on its anterior end; middle of i)leura 



