952 LIST OF DIPTERA. 



black bristles : feelers black, shorter than the face ; third joint flat 

 above, convex beneath, obliquely truncated at the tip, full twice the 

 length of the second joint; bristle downy, rather thick towards the 

 base, much more than twice the length of the third joint: abdomen 

 elliptical, a little longer than the chest : legs black, clothed with 

 black hairs and bristles ; thighs and shanks slightly tinged with 

 gray ; foot-cushions tawny : wings pale gray ; wing-ribs tawny ; 

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

 base, slightly curved inward from thence to the tip ; scales rather 

 small, grayish with pale yellow borders, the lower hardly extending 

 beyond the upper ; poisers yellow. Length of the body 2 lines ; of 

 the wings 4 lines. 



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

 G. Barnston, Esq. 



Anthomyia Isura, n. s., fem. Cana, thorace vittis tribusfuscis, ab- 

 domine basi fulvo, palpis antennis tarsisque nigris, femoribus 

 nigro-cinereis, tibiis piceis, alls subcinereis. 

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

 a hoary covering ; a slightly fawn-coloured stripe extends from the 

 feelers, and afterwards dividing, encloses a triangular space about 

 the eyelets ; sides of the face beset with two or three bristles at the 

 base : epistoma not prominent : eyes red ; fore part rather 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 flat above, slightly convex be- 

 neath, truncated at the tip, nearly thrice the length of the second ; 

 bristle downy, stout towards the base, much more than twice the 

 length of the third joint, its second joint rather long : chest adorned 

 with three indistinct pale brown stripes : abdomen obconical, tawny 

 at the base, longer than the chest : legs black, clothed with black 

 hairs and bristles ; thighs tinged with gray ; knees ferruginous ; 

 shanks pitchy ; wings very slightly tinged with gray ; wing-ribs and 

 veins tawny, the latter pitchy towards the tips ; lower cross-vein 

 straight from the base to half the length, whence it is very slightly 

 curved inward to the tip ; scales rather small, white with pale yel- 

 low borders, the lower hardly extending beyond the upper; poi- 

 sers yellow. Length of the body 2\ lines ; of the wings 5 lines. 

 a. Nova Scotia. From Lieut. Redman's collection. 



