894 LIST OF DIPTERA. 



Musca Lilaea, n. s., fem. Nigra, canescens, capite ferrugineo fulvo- 

 que vario, abdomine purpureo apice cyaneo, palpis rufo-fulvis, 

 antennis nigris, pedibus ferrugineis, tarsis nigris, alis cinereis. 

 Allied to M . vomitoria, but not more than half the size : body 

 clothed with black hairs and bristles : head black, ferruginous about 

 the base of the feelers, tawny on each side of the face ; epistoma 

 tawny, prominent ; sides of the face fringed with bristles for more 

 than half the length from the base : eyes brassy red ; fore part 

 slightly convex, its facets small : sucker black, clothed at the tip 

 with tawny hairs ; palpi reddish tawny, beset with black bristles : 

 feelers black, as long as the face ; second joint ferruginous ; third 

 joint soft, deep, linear, rounded at the tip, full four times the length 

 of the second ; bristle longer than the third joint : chest black, 

 tinged with hoary bloom : abdomen elliptical, bright purple, tinged 

 with hoary bloom, blue towards the tip, much broader and a little 

 longer than the chest : legs dark ferruginous, clothed with black 

 hairs and bristles ; feet black ; foot-cushions dark tawny : wings 

 gray ; wing-ribs and veins black ; tip cross-vein forming a slightly 

 obtuse angle with the fourth longitudinal vein, curved inward near 

 the base, straight from thence to the tip, joining the border at a 

 short distance above the tip of the wing ; lower cross-vein with the 

 two usual curves, which are very indistinct ; scales gray, with dingy 

 white borders. Length of the body 3 — 3| lines ; of the wings 7 — 8 

 lines. 



a. St. Martin's Falls, Albany Eiver, Hudson's Bay. Presented by 

 G. Barnston, Esq. 



Musca Hortona, n. s., fem. Cinereo-nigra, abdomine cyaneo, apice 

 subtus purpureo, antennis piceis, palpis pedibusque nigris, alis 

 cinereis. 



Body black, dull, clothed with black hairs and bristles : crown 

 flat, very broad ; epistoma not prominent ; sides of the face bristly 

 at the base : eyes coppery ; fore part convex, its facets very small : 

 sucker black, clothed at the tip with tawny hairs ; palpi black : 

 feelers pitchy ; second joint ferruginous ; third joint decreasing in 

 depth from the base to the tip, which is conical, full four times the 

 length of the second ; bristle black, very much longer than the third 

 joint: chest tinged with gray: abdomen bright blue, obconical, 

 much broader, but hardly longer than the chest ; tip tinged with 

 purple beneath : legs black, clothed with black hairs and bristles ; 

 foot-cushions tawny : wings gray ; wing-ribs and veins black ; tip 

 cross-vein forming a slightly obtuse angle with the fourth longi- 

 tudinal vein, very slightly curved inward near the base, straight 



