332 



BRITISH SPECIES OF THE 



brown : wings brownish : the costal nerve a little bristly at the 

 base ; 2d nerve as in the last : interval of the cross nerves not 

 longer than the small one. (Less than No. 18.) 

 In the same situations. 



BB. Scutellum setts aspersum. 



Sp. 16. L. fuscipennis. Nigra pedibus piceis ; alls infus- 

 catis ; halteribus fuscis capitulo pallido. 



Borborus fuscipennis, Ent. Mag. I. 178. 



Resembles L. limosa very much ; the legs are rather shorter and 

 more hairy, and the cross nerves less distant : dusky black : face 

 very short and elevated between the antennae, so that the head is 

 nearly triangular above : front thickly set with bristles, its fore 

 margin piceous : palpi reddish : thorax and scutel often dull rust 

 brown : scutel elongate, with several bristles at the sides, and a 

 few on the disk : abdomen opaque black : legs hairy, pitchy 

 brown : middle pair very thickly armed with spines or bristles ; 

 2d joint of hind feet not thickened : poisers yellowish, with dusky 

 base : wings brownish : the nerves nearly as in L. limosa, and 

 dusky. (Length 1£ ; wings 2s lines, sometimes much less.) 

 Inhabits sea-weeds drying on the shore. 



BBB. Scutellum pubescens. 



Sp. 17. L. vagans. Nigra opaca, alts infumatis ; halte- 

 ribus Jtavidis. 



Borborus vagans, Ent. Mag. I. 178. 



Dull black : eyes small : arista finely and thickly pubescent : scutel 

 as long as the metathorax : legs pubescent, dusky, with the 

 fore coxae and knees, and the middle feet rust brown ; sometimes 

 the legs are entirely of the latter colour : middle shanks with 

 numerous bristles ; 2d joint of the hind feet twice as long as the 

 1st, not thickened: poisers yellowish: wings brownish yellow; 

 nerves of the same colour ; costal more dusky, bristly at the base, 

 rather thick : 2d nerve extending over § of the interval between 

 the 1st and 3d : interval of the cross nerves longer than the prin- 

 cipal one. (Length 1 ; wings 2 lines, or less.) 



Not rare on sea-weed. 



Sp. 18. L. lugubris. Nigra pubescens, alis denigratis ; 

 halteribus fuscis. 



Face piceous : eyes larger than in the last ; scutel shorter ; colour 

 deep black : middle shanks and feet dusky : middle shanks with 



