LIST OF DIPTERA. 965 



of the face ; sides of the face without bristles ; epistoma prominent, 

 ferruginous on the fore side: eyes red, convex ; all the facets very- 

 small : sucker black, clothed with tawny hairs ; palpi black, beset 

 with black bristles: feelers black, a little shorter than the face; 

 third joint flat above, convex beneath, obliquely truncated at the 

 tip, more than twice the length of the second joint; bristle bare: 

 chest and breast slightly tinged with gray: abdomen elliptical, 

 a little longer than the chest, adorned with a hoary covering, which 

 has a slight tawny tinge ; fore borders of the segments black : legs 

 black, clothed with black hairs and bristles ; thighs and shanks 

 tinged with gray ; foot-cushions dark tawny : wings gray ; wing- 

 ribs tawny ; veins black, tawny at the base ; lower cross-vein 

 slightly curved inward ; scales very small, white with pale yellow 

 borders ; poisers pale tawny. Length of the body 2 lines ; of the 

 wings 4 lines. 



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

 G. Bamston, Esq. 



Eriphia pretiosa, Barnstons MSS. Nigro-cenea, capite antico ci- 

 nereo, palpis antennis pedibusque nigris, alls nigro-fuscis. 

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

 with a dark gray stripe, which widens from the crown to the base of 

 the feelers ; a little gray stripe on each side of the feelers ; face and 

 underside of the head gray ; sides of the face fringed with bristles at 

 the base; epistoma not prominent: eyes dark red; forepart flat, 

 its facets larger than those elsewhere : sucker black, clothed with 

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

 little shorter than the face ; third joint longer than the second, 

 slightly increasing in depth from the base to the tip, which is some- 

 what truncated ; bristle bare, rather more than twice the length of 

 the third joint, stout at the base : chest and abdomen with a very 

 slight brassy tinge : abdomen obconical, hardly longer than the 

 chest: legs black, clothed with black hairs and bristles; foot- 

 cushions tawny : wings dark brown ; wing-ribs and veins black ; 

 lower cross-vein nearly straight, but with a very indistinct tendency 

 to two curves, the lower inward, the other outward ; scales small, 

 gray with tawny borders, the upper extending a little beyond the 

 lower ; poisers tawny. Length of the body 2\ lines ; of the wings 

 5^ lines. 



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

 G. Barnston, Esq. 



4p 



