LIST OF DIPTERA. 963 



much longer than the second joint ; "bristle downy, much more than 

 twice the length of the third joint, stout towards the base, its second 

 joint rather long : chest adorned with four irregularly hoary stripes ; 

 breast gray : abdomen elliptical, rather flat, adorned above with 

 a very large hoary spot on each side of every segment, hoary 

 beneath and at the tip, a little shorter and broader than the chest : 

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

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

 pitchy ; veins black, pitchy at the base ; lower cross-vein straight 

 for one-third of the length from the base, very slightly curved in- 

 ward from thence to the tip ; scales pale yellow, very small ; poisers 

 tavvny. Length of the body 2^ lines ; of the wings 5 lines. 

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

 G. Barnston, Esq. 



Eriphia biquadrata, Barnston s MSS., mas. Nigra, 



cano maculis quatuor nigris, palpis antennisque nigris, pedibus 

 nigro-cinereis, alls nigro-fuscis. 



Body black, clothed with black hairs and bristles : face gray, 

 its sides fringed with bristles at the base ; epistoma not prominent : 

 eyes red ; fore part slightly convex, its facets a little larger than 

 those elsewhere ; sucker black, clothed with tawny hairs ; palpi 

 black, beset with black bristles : feelers black, shorter than the face ; 

 third joint a little more than twice the length of the second, flat 

 above, slightly convex beneath, somewhat rounded at the tip ; bris- 

 tle bare, slender, rather stout at the base, much more than twice the 

 length of the third joint: abdomen obconical, hoary, adorned with 

 four very large square black spots on the first and the second seg- 

 ments, as broad as the chest and a little longer : legs black, slightly 

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

 wing-ribs ferruginous; veins black; lower cross-vein very nearly 

 straight, but having an indistinct tendency to the two usual curves ; 

 scales pale brown, rather large, the lower extending beyond the up- 

 per ; poisers tawny. Length of the body 1| line ; of the wings 3| 

 lines. 

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



G. Barnston, Esq. 



Eriphia lata, Barnston 's MSS., fern. Nigra, palpis antennis pedi- 



busque nigris, alis subcinereis. 



Body black, clothed with black hairs and bristles : sides of the 

 face without bristles ; epistoma not prominent : eyes red ; fore part 



