326 BRITISH SPECIES OF THE 



Sp. 1. A. pedestris. 



Borborus pedestris, 3Ieig. VI. 209. No. 30. 

 Apterina pedestris, Macq. II. 574. No. 1. 



Dull black, hairy : arista pubescent : scutel very obtusely trian- 

 gular : abdomen of male short, clavate, 2d segment very 

 large, with a longitudinal line ; those which follow very short, 

 the last large : legs long and hairy ; thighs thick, especially the 

 fore pair ; hind shanks with a curved spur ; 2d joint of the feet 

 twice as long as the 1st, not thickened; 1st joint of the fore 

 pair unguiculate in the male : poisers abortive, dusky : wings 

 shorter than the thorax : nerves disposed as in Borborus, but 

 indistinct ; the 2d cross nerve falling on the margin, and forming 

 a continuation of the costal. (Length li — 1| line.)] 



Mr. Dale has taken this species in Dorsetshire. I found it 

 near London. It occurs in the north both of Germany and 

 France. 



Gen. IV. — LiMosiNA. 

 Arista pubescens basi geniculata. Areola analis incompleta, 



Nervi traiisversi approximati. Nervi lo?igitudinales 4"^ 



et 5"^ abbreviati. 



Borborus A. e. Meig, VI. 207. 



Limosina . . Macq. S. a B. II. 571. VII. 



Front bristly : arista pubescent, the 1st joint a little elongated : 

 scutel large, flat, with long bristles : middle legs elongated, the 

 shanks usually with lateral spines or bristles ; no spur at the end 

 of the hind shank : costal nerve of the wing often bristly at the 

 base ; the 2d main nerve distant from the tip ; the 4th and 5th 

 vanishing beyond the principal cross nerve, which is remote from 

 the margin : no anal cell, nor any complete one above the dis- 

 coidal. 



A. Antennce oblique porrectce. 



B. Scutellum disco glabrum, nudum. 



C. Segmentum 41""^. abdominis in mare utrinque cirrosum. 



Sp. 1. L. silvatica. Nigra nitida, alls subhyaUnis ; halte- 

 ribusfuscis. 



Borborus silvaticus, Meig. VI. 207. No. 24. 



Curtis, B. E. 469. No. 24. 



Limosina silvaticus, Macq. S. a B. II. 572. No. 1. 



Mycclia claripennis, Rob. D. 806. No. 3. 



