THE MYCETOPHIUD.^i OF NORTH AMERICA. 219 



scape and base of the flagellum yellow. ]\Iesonotum with 3 

 broad cinereous stripes ; the humeri, space between the stripes, 

 yellow. Pleura, sternum and metanotum brownish. Abdomen 

 wholly fuscous. Coxse and legs yellow, tibiae and tarsi slightly 

 infuscated, fore metatarsus about .9 as long as its tibia, claws 

 minute, apparently simple, pulvilli plumose, empodium like a 

 stag's horn. Wings (fig. 76) hyaline, distinct brownish stigma 

 at apex of Ri, subcosta ends in the costa less than the length of 

 the R-M crossvein before the base of the radial sector, R2+3 

 ends in the costa slightly distad of the tip of Ri, base of Cui 

 wanting, veins yellowish. Length of wing is 6 millimeters 

 which is twice as long as the fore tibia. Halteres yellow, knob 

 brown. Several specim.ens collected by Prof Aldrich, Julia- 

 etta, Idaho. The specimen in the Loew collection at Cambridge 

 is from New ITampshire. 



2. Bolitophila cincrca Mcigcn. 



1818. cincrca ]\Ieigen, Syst. Beschr. I. 221. 



Male and female. Length 4 to 6 .mm. Antennae fuscous, 

 yellowish at the base, shorter than the body; palpi yellow. 

 Thorax light brown, grayish pollinose, mesonotum subfuscous 

 with yellowish humeri, sometimes with indications of 3 longi- 

 tudinal stripes; scutellum brown; abdomen brown. Coxse and 

 femora yellow, the latter and the tibiae sometimes subfuscous, 

 tarsi brown, fore metatarsus is .85 times as long as its tibia. 

 Wing (fig. 75) cinereous tinged, with brown veins and pale 

 subobsolescent stigma, subcosta ends distad of the base of the 

 radial sector, R=43 ends in Ri, the M-Cu crossvein present, 

 though short and stout. Length of wing is as long as the body 

 which is about 1.75 times as long as the fore tibia. ITalteres 

 with brown knob. 



Several specimens. Ithaca, N. Y. ]\Iay and September. 



3. BoIitopJiila hyhrida IMcigen. 

 1804. Jiyhrida Mcigcn, Klass I. 47. 



1818. fusca Meigen, Syst. Beschr. T. 221. 

 Male and female. Length 4 to 6 mm. Pal]M ]")ale, face, 

 front and vertex brown, antenncT brown, yellow at the base. 

 Thorax pale brown, dorsum pale brown, or more yellowish 



