90 MAINE AGRICULTURAL EXPERIMENT STATION. 1912. 



with very indistinct spot on the petiole of the media. There 

 are 3 ranges of setae on the extensor surface of the hind tibia 

 in the type specimen at Cambridge. "Middle States ;" N. 

 Adams, Mass. (C.W.J.) June. 



Male. Length 2.5 mm. Thorax brown, subshining, anterior 

 lateral margins yellow ; hairs yellowish, setae brown. Abdomen 

 brown, venter yellowish ; hypopygium with short, broad appen- 

 dages (Fig. 68). Coxse and legs yellow, hind femora tipped 

 with brown ; fore metatarsus about .8 as long as the tibia ; 

 middle tibije each with 3 setae on flexor surface, hind tibiae each 

 with 3 ranges of setae on extensor surface ; hind metatarsus 

 about 7-8 as long as the remaining joints. Wing yellowish 

 hyaline, with rather indistinct central spot (Fig. 193). Haltere-. 

 yellow, Auburndale, Mass., (C.W.J.) Aug. 



2. MycctopliUa jucunda n. sp. 

 Male. Length 2.5 mm. Head shining black, scape, palpi 

 and base of first flagellar joint yellow, flagellum fuscous. 

 Thorax shining black, small post humeral depression yellow, 

 hairs dusky yellow to brown, setae brown. Abdomen black; 

 hypopygium small, globular (Fig. 69). Coxae and legs yellow, 

 hind femora tipped with black, fore metatarsus about .85 as 

 long as its tibia; middle tibia with 3 setae on flexor surface; 

 hind tibiae each with 3 ranges of setae on extensor surface, 

 hind metatarsus about .8 as long as the remaining 4 joints. 

 Wing yellowish hyaline, unmarked (Fig. 194). Halteres yel- 

 low.- Ithaca, N. Y., August. 



3. Mycetophila perita n. sp. 

 Male. Length 3.0 mm. Head black; scape, basal joint of 

 flagellum and palpi yellow ; flagellum fuscous. Thorax shining 

 brownish black, the humeri widely and the posterior lateral 

 angles narrowly yellow, hairs and setae brown; 4 scutellar setae. 

 Abdomen brown, venter and the posterior margins of the inter- 

 mediate segments on the sides, yellow ; hypopygium with one 

 pair of appendages elongate (Fig. 70). Coxae and legs yellow; 

 fore metatarsus about 1-16 shorter than the tibia, middle tibiae 

 each with 2 setae on flexor surface, hind tibiae each with 3 

 ranges on extensor surface. Wing yellowish hyaline, with cen- 

 tral spot (Fig. 195). Milwaukee, Wis., (W.jM.W.), June; 

 Wild Cat Canvon, Costa Co., Cal. (T.C.B.) Nov.; Ithaca, N. Y. ! 

 July. 



