212 MUSCID^E. 



sessile, depressed. Legs slender. Male. Abdomen almost linear, gene- 

 rally bristly at the tip ; first segment long. Fore femora and fore tibia 

 dentate and spinose beneath. Fcem. Abdomen elongate-oval, segments 

 of nearly equal size. 



1. putris, L. S. N. ii. 793. 89 (1767) ; Scop. ; F. ; Gmel. ; Pal. ; 

 Meig. ; Mcq. ; Hal. ; Zzii.Jimeti var., ~L.Jimeti, Schr. Atra vel 

 nigro-senea, nitida, alis subhyalinis ant subfuscis ; Mas, hypopygio bre- 

 vius setoso, metatarso antico brevi incrassato. Long. 1| If ; alar. 2| 

 31in. 



Black, shining. Wings almost limpid ; costa black. Halteres yel- 

 low, brown at the base ; tarsi covered beneath with brown down. Male. 

 Tufts of curled hairs on each side of the hypopygium not half so long as 



Generally distributed. (E. S. I.) 



2. pilosa, Desv. E. M. 746. 1 (1830). superba, Hal. Nigra 

 aut nigro-asnea, nitida, alis sublimpidis ; Mas, hypopygio longius setoso, 

 metatarso antico longmimo. Long. 1; alar. 2 lin. 



Black, shining. Wings almost limpid ; costa black. Halteres yel- 

 low. Tarsi covered beneath with brown down. Male. Tuft of hairs 

 on each side of the hypopygium as long as the abdomen. Fore femora 

 twisted and armed below with four spinous teeth in a cluster ; fore tibia 

 deeply notched, with a, strong tooth on the inner side ; above this a spine, 

 a small tooth nearer the base ; before the tip on the outer side is a long 

 spine ; fore metatarsus very long and straight, the next joint is the shortest. 

 Var. Body asneous-black. 



Not common. (E. I.) 



3. minor, Hal. E. M. i. 170 (1833). Nigra, nitida, alis sublim- 

 pidis aut subfuscis; Mas, hypopygio nudo, tarsis simplicibus. Long. 

 f-1 ; alar. If-lf lin. 



Black, shining. Wings almost hyaline or slightly brown. Halteres 

 yellow. Abdomen asneous-black. Male. Hypopygium bare. Fore 

 femora with a few bristles below ; fore tibiae with a bifid spine about the 



GeneraUy distributed. (E. S. I.) 



4. Leachi, Meig. Zw. v. 291. 14 (1826). Nigra, nitida, alis sub- 

 limpidis, maris abdomine apice setoso, pedibus basi runs. Long. 2 ; alar. 

 4 lin. 



Black, shining. Wings almost hyaline. Halteres yellow. Legs 

 red at the base. Male. Hypopygium bristly ; fore femora and fore tibia 

 dentate beneath. 



Bare. (E.) 



