74 MAINE AGRICULTURAL EXPERIMENT STATION. I912. 



25. Bxcchia absiirda n. sp. 

 Male. Length 3 mm. Thorax brown, pleura a little paler 

 brown, humeri yellow. Abdomen dark brown, the venter of 

 segment 2, venter and sides of 3, and hypopygium yellow 

 (Fig.^ 56). Fore metatarsus about i.i longer than the tibia. 

 Wing hyaline, tinged with brown (Fig. 181). Ithaca, N. Y, ! 

 and Orono, M'C. Nov. 



26. Bxechia casta n. sp. 



Male. Length 3.5 mm. Thorax and abdomen brown, the 

 latter darker brown, humeri yellow; hypopygium yellow (Fig. 

 57). Fore metatarsus about .95 as long as the tibia. Wings 

 hyaline tinged with brown (Fig. 182). 



Female. Like the male but the anterior margin of each seg- 

 ment on the venter and sides sometimes faintly tinged with 

 yellow. Black Rock Creek, Dubois,! Dinwiddle Creek, Hunt- 

 er's Creek, Wyoming (W.M.W), Sept. 



27. B.vcchia analis Adams. 



Wash. Carnegie Inst. Pub. 67. 37.. 1907. (Mycetophila.). 



Male. Length 4 mm. Head brownish black, mouth part? 

 and basal joints of antennae yellow, remaining" joints of antennse 

 light brown. Thorax brownish black, lateral margins of mes- 

 onotum and pleura brownish-yellow, mesonotum with short 

 yellow pile and black bristly hairs, the latter distributed along 

 the sides ; scutellum with an apical pair of strong bristles. 

 Abdomen brownish-black, apex yellow, with short j^ellow jjile. 

 Coxge yellow, femora light yellow, tibia and rarsi becoming 

 darker distally ; the front tibiae without bristles except the apica! 

 ones, the second are provided with a row of indistinct setulre 

 and the hind tibiae have rather strong bristles ; front tarsi a 

 little over twice as long as front tibiae ; middle tarsi above twice 

 as long as middle tibiae, hind tarsi 1.5 times as long as their 

 tibiae. Wings nearly hyaline, Rs and anterior branch of media 

 diyergent distally, furcation of media in front of base of Rs, 

 furcation of cubitus considerably posterior to it. Halteres light 

 yellow. "Mayfield Cave, Ind." 



The type specimen, which was sent to me by Dr. Adams for 

 examination, has an hypopygium resembling that of B. attritay 

 the longer process very similar to that shown in fig, 54, but 



