LIST OF DIPTERA. 889 



with two extremely slight curves, the lower inward, not more than 

 half the length of the other, which is outward, and sometimes almost 

 imperceptible ; scales white, with yellow borders. Length of the 

 body 4 lines ; of the wings 8 lines. 



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

 G. Barnston, Esq. 



Musca purpurascens, Walker, Linn. Trans, xvii. 355, 64. 



a. St. Catherine, Brazil. Presented by the Entomological Club. 



Musca Phara, n. s., fern. Purpurea, capite albo micante, pal- 

 pis antennis pedibusque nigris, femoribus purpureis, alis lim- 

 pidis. 



Body bright purple, clothed with black hairs and bristles : head 

 prominent in front, adorned with white lustre in front and on the 

 pitchy stripe between the eyelets and the feelers ; epistoma slightly 

 prominent ; sides of the face fringed with stout bristles along the 

 whole breadth : eyes dark red : fore part flat, its facets much larger 

 than those elsewhere : sucker black, clothed at the tip with a few 

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

 with a hoary tinge, a little shorter than the face ; third joint linear, 

 rounded at the tip, nearly thrice the length of the second joint ; 

 bristle very much longer than the third joint: abdomen obconical, a 

 little broader and shorter than the chest : legs black, clothed with 

 black hairs and bristles ; thighs purple ; foot-cushions tawny : 

 wings colourless ; wing-ribs pitchy ; veins black ; tip cross-vein 

 forming with the fourth longitudinal vein a very obtuse angle, 

 which is somewhat rounded, straight thence to the tip, joining the 

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

 with two slight curves, the lower inward, more distinct than the 

 other, which is outward ; scales whitish, with pale yellow borders- 

 Length of the body 4 lines ; of the wings 8 Hues. 



Musca Mazaca, n. s., fem. Purpurea, thoracis abdominisque discis 

 cyaneo-viridibus, palpis antennis pedibusque nigris, femoribus 

 cyaneo -purpureis, alis limpidis. 



Body beset with a few black hairs and bristles : head purple, 

 with a silvery covering in front ; a black stripe between the eyelets 

 and the feelers ; epistoma rather prominent ; sides of the face pro- 

 minent at the base, fringed with bristles along the whole length : 

 eyes pitchy ; fore part slightly convex, its facets larger than those 

 elsewhere : sucker and palpi black, the latter beset with black bris- 



