842 LIST OF DIPTERA. 



yellow, clothed with black hairs and bristles; feet tawny, very 

 thickly beset with short hairs ; foot-cushions pale tawny ; claws 

 black : wings nearly colourless, but having a very slight tawny 

 tinge ; wing-ribs and veins tawny ; veins pitchy towards the tips ; 

 tip cross-vein forming with the fourth longitudinal vein an obtuse 

 angle, which is very near the border of the wing, straight, with the 

 exception of a very slight inward curve near the tip, joining the 

 border at the tip of the wing ; lower cross-vein nearly straight, the 

 two usual curves being almost imperceptible; scales white, with 

 pale yellow borders. Length of the body 2\ lines of the wings 6 

 lines. 

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



Dexia Cremides, n. s., fem. Nigra, capite albo, thorace cinereo, 

 subvittato, scutelli apice ferrugineo, pectore cano, abdomine ma- 

 culis cinereo-fulvis vittato, anlennis ferrngineis, palpis pedibus- 

 que fulvis, tarsis nigris, alls subcinereis, basi costa venarumque 

 marginibus subfulvis. 



Body black, clothed with black hairs and bristles : head 

 adorned with a white covering ; a pitchy stripe fringed with bristles 

 between the eyelets and the feelers ; peristoma and epistoma taw- 

 ny, the latter prominent ; sides of the face fringed with bristles at 

 the base : eyes red, not hairy : sucker black, pitchy and clothed 

 with tawny hairs at the tip ; palpi tawny, beset with black bristles : 

 feelers ferruginous, rather more than half the length of the face ; 

 third joint nearly linear, pitchy, ferruginous at the base, conical at 

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

 black, pale tawny at the base, deeply fringed from thence to the tip, 

 more than twice the length of the third joint: chest covered with 

 gray bloom, which is indistinctly striped with black ; breast hoary ; 

 tip of the scutcheon ferruginous : abdomen obconical, a little 

 broader but not longer than the chest, adorned with grayish tawny 

 reflections, which are arranged in four rows of large irregular spots ; 

 underside hoary : legs tawny, clothed with black hairs and bristles ; 

 shanks darker than the thighs ; feet black ; claws and foot-cushions 

 tawny: wings slightly gray, with an indistinct tawny tinge at the 

 base, on the fore borders, and along the borders of the veins ; wing- 

 ribs and veins tawny ; veins pitchy towards the tips ; tip cross-vein 

 forming a right angle with the fourth longitudinal vein, slightly and 

 irregularly curved inward along the whole length, joining the bor- 

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

 with two curves, the lower inward, shorter and deeper than the 

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

 Length of the body 2% lines ; of the wings 4 lines. 

 a. North America. Presented by the Entomological Club. 



