496 LIST OF DIPTERA. 



Empis Cormus, n. s., mas. et fern. Niger, (mas.) aut cinereus (fern.) 

 antennis nigris, fern, thoracis vitlis tribus abdominisque fasciis 

 canis, pedibus nigris, genubus fulvis, tibiis tarsisque piceis, alis 

 limpidis. 



Body of the male black, of the female gray : lip, eyes, and 

 feelers black : chest of the female adorned with three indistinct 

 hoary stripes : hind borders of abdominal segments of the female 

 hoary : legs black ; knees tawny ; shanks and feet piceous : wings 

 colourless, rather broad ; wing-ribs and veins piceous, the latter 

 strongly marked ; poisers piceous. Length of the body If — 2 lines ; 

 of the wings 3^ — 4 lines. 



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

 G. Barnston, Esq. 



Empis Agasthus, n. s., fern. Nigra, antennis nigris, pedibus fulvis, 

 femoribus tibiis tarsisque apice piceis, alis limpidis. 



Body, eyes and feelers black: legs tawny, rather hairy ; thighs, 

 shanks, and feet piceous towards the tips : wings colourless ; wing- 

 ribs and veins pale tawny ; poisers yellow. Length of the body li 

 line ; of the wings 3 lines. 



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

 G. Barnston, Esq. 



Group IV. 



Empis luctuosa, Kirby, North Amer. Zool. Ins. 31], 1. 

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



Group V. 



Empis Bistortse, Meig. Dipt iii. 29, 22. Curt. Brit. EnU 18, 17, 

 2nd edit. Macq. Hist. Nat. Dipt. i. 329, 10. 



a. England. 



b. England. Presented by F. Walker, Esq. 



c. Hammerfest, Finmark. Presented by F. Walker, Esq. 



Empis pilipes, Meig. Dipt. iii. 31, 29. 



a. England. Presented by F. Walker, Esq. 



Group VI. 



Empis nigritarsis, Meig. Dipt. iii. 32, 31. vi. 337. Curt. Brit. Ent. 



18, 14, 2nd. edit. Macq. Hist. Nat. Dipt. i. 329, 9, 

 a. England. Presented by F. Walker, Esq. 



