310 DIPTERA OF NORTH AMERICA. [PART II. 



Page 656. Medeterus al/boflorens, n. s., Fern. 



^Eneus, fulvo pubescens, subtus albus, abdomine cupreo-viridi, 

 antennis nigris, pedibus viridibus, tarsis piceis, alls cinereis fusco 

 subvittatis. 



Head and chest bronzed, beset with a few black bristles, thickly 

 covered with tawny bloom ; eyes dark red, covered with white 

 down ; mouth and feelers black ; abdomen rather light green, 

 mingled with copper-color, thinly clothed with short black hairs, 

 not longer than the chest ; hind chest, breast, and under side of the 

 abdomen covered with white bloom; legs long, slender, green, 

 slightly covered with tawny bloom, beset with short black hairs and 

 bristles ; feet pitchy towards the tips ; claws black ; foot-cushions 

 pale yellow ; wings gray, very slightly clouded with brown along 

 the borders of the veins ; wing-ribs pitchy ; veins black ; poisers 

 tawny, pitchy, and covered with white bloom towards the tips. 

 Length of the body 1^-1^ line > of tlie win g s 4-4^ lines. 



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



Page 659. Dolichopus afliiiis, HALIDAY'S MSS., Mas. et Fern. 



Cyaneo-, aut cupreo-viridis, antennis nigris, pedibus flavis, femo- 

 ribus posticis tarsisque fulvis, tarsis anticis, mari. apice nigris 

 dilatatis, tarsis posticis nigris, alis limpidis. 



Male. Head and chest green, armed with stout black bristles ; 



head fringed behind with pale tawny hairs, covered in front and 

 beneath with white bloom ; eyes red, covered with white down ; 

 feelers black ; chest bluish-green on the disk ; abdomen coppery- 

 green, clothed with short black hairs, covered with white bloom 

 beneath and on each side, where there is a row of black punctures ; 

 appendages pale yellow; legs yellow, clothed with short black 

 hairs ; four hinder hips green ; hind thighs tawny, furnished with 

 a few tawny hairs ; shanks and feet armed with black bristles ; 

 feet tawny, darker towards the tips ; hind feet black ; tips of fore 

 feet black, widened ; wings colorless ; wing-ribs and poisers yel- 

 low ; veins pitchy. 



Female. Body coppery-green ; legs tawny ; shanks darker 

 than the thighs ; hind feet pitchy. Length of the body 2-2|- lines ; 

 of the wings 4-5 lines. 



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



