LIST OF DIPTERA. 911 



pale yellow : wings slightly gray ; wing-ribs pitchy ; veins black ; 

 tip cross-vein united with the fourth longitudinal vein by an ex- 

 tremely shallow curve, and having an almost imperceptible inward 

 curve from thence to the tip, joining the border just below the tip 

 of the wing ; lower cross-vein with two very slight curves, the lower 

 inward, more distinct than the other, which is outward ; scales 

 dingy white, with yellow borders ; poisers tawny. Length of the 

 body 2^ lines ; of the wings 5 lines. 



a. Lapland. Presented by the Entomological Club. 



b. France. 



MuscAtempestiva, Fall. Muse. 53, 36. Meig. Dipt. v. 76, 44. 

 Zett. Ins. Lapp. 661, 31. M. nana ? Meig. Dipt. vi. 375, 51. 

 Cyrtoneura tempestiva, Meig. Dipt. vii. 309, 6. Zett. Dipt. 

 Scand. iv. 1349, 4. C. nana ? Meig. Dipt. vii. 309, 8. 



a. England. 



b. ? From Mr. Children's collection. 



Musca Aluta, n. s., fern. Nigro-fusca, thorace vittis quinque cine- 

 reis, abdomine Jlavo-fusco tecto, antennis palpis pedibusque ni- 

 gris, alis subcinereis. 



Body black, clothed with black hairs and bristles: head covered 

 with dull tawny bloom ; crown broad ; epistoma slightly prominent ; 

 sides of the face beset with bristles at the base : eyes red ; fore part 

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

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

 black, a little shorter than the face ; third joint linear, truncated at 

 the tip, full four times the length of the second joint ; bristle longer 

 than the third joint : chest dark brown, adorned with five indistinct 

 hoary stripes ; breast tinged with gray : abdomen elliptical, a little 

 broader but not longer than the chest, adorned with a yellowish 

 brown covering : legs black, clothed with black hairs and bristles ; 

 foot-cushions pitchy : wings slightly gray ; wing-ribs tawny ; veins 

 black, pitchy towards the base ; tip cross-vein united to the fourth 

 longitudinal vein by a very shallow outward curve, straight from 

 thence till near the tip, where it is very slightly inclined inward, 

 joining the border just below the tip of the wing; lower cross-vein 

 with a rather deep outward curve in the middle, and having a short 

 and slight inward curve at each end ; scales white, with pale tawny 

 borders ; poisers tawny. Length of the body 2^ — 3 lines ; of the 

 wings 5 — 6 lines. 



a. Lapland ? 



b. France ? 



Tn one wing of an insect of this species the lower cross-vein 

 sends forth a stump into the disk. 



