824 LIST OF D1PTERA. 



ferruginous, clothed with tawny hairs, palpi pitchy, heset with black . 

 bristles : feelers pitchy, shorter than the face; second joint at the tip, 

 and third at the base, ferruginous ; third linear, truncated at the tip, 

 about twice the length the second; bristle tawny, black and stout for 

 more than one-third of the length from the base, feathered till near the 

 tip, almost twice the length of the third joint: chest adorned with 

 four hoary stripes ; the inner pair double, narrower than the outer 

 pair; breast and scutcheon mostly hoary: abdomen nearly ellip- 

 tical, a little broader, but not longer than the chest, tessellated with 

 hoary reflections, which are disposed in four rows of irregular spots ; 

 underside mostly hoary ; tip — especially beneath — bright red : legs 

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

 gray; foot-cushions pale tawny: wings nearly colourless, with a 

 pale yellow tinge at the base; shoulders and wing-ribs tawny ; veins 

 black, tawny towards the base ; tip cross-vein forming a nearly light 

 angle with the fourth longitudinal vein, slightly curved inward at 

 the base, straight from thence to the tip, joining the border at a 

 short distance above the tip of the wing ; lower cross-vein with two 

 very slight curves, the lower inward and hardly perceptible, the other 

 outward ; scales white. Length of the body 4 lines ; of the wings 8 

 lines. 

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



Saecophaga acerba, n. s., fern. Nigra, capile supra subaureo, 

 thoraci vittis quatuor scittello pectoreque canis, abdomine ma- 

 culis pallid efulvis quadrivittato, antennis pedibusque nigris, alis 

 cinereis. 



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

 with very pale golden colour, hoary and partly clothed with pale 

 yellow hairs beneath ; a black stripe fringed with bristles between 

 the eyelets and the feelers ; face fringed with hairs at the base ; 

 epistoma tawny, slightly prominent : eyes dark red : sucker black, 

 clothed with tawny hairs ; palpi black, beset with black bristles : feeltrs 

 black, nearly as long as the face ; third joint flat above, very slightly 

 convex beneath, truncated at the tip, more than twice the length of 

 the second joint; bristle full twice the length of the third joint, 

 stout for one-third, and feathered for two-thirds of its length : chest 

 adorned with four hoary stripes, the inner pair double, narrower than 

 the outer pair ; scutcheon and breast mostly hoary : abdomen nearly 

 elliptical, broader and a little longer than the chest, adorned with 

 pale tawny reflections, which are disposed in four rows of irregular 

 spots ; tip red : legs black, clothed with black hairs and bristles ; 

 foot-cushions pitchy : wings gray ; shoulders dark tawny : wing-ribs 



