246 Scientific Proceedings, Royal Dublin SocietiJ. 



" BBB. Scutellum pubescens. 



" Sp. 17. L. vagans. Nigra opaca, alis infmnatis, haUeribus flcwidis. 



" Borborus vagans. Ent. Mag. I. 178. 



" Dull black : eyes small : arista finely and tbickly pubescent : scutel 

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

 and knees, and the middle feet rust-brown ; sometimes the legs are 

 entirely of the latter colour : middle shanks witli 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 

 f of the interval between the 1st and 3d : interval of the cross-nerves 

 longer than the principal one. (Length 1 ; wings 2 lines, or less.) 



" Not rare on sea-weed." 



There are only four strong bristles round margin of scutellum, and only 

 one pair of dorso-central bristles on thorax ; the only species with which it 

 might be confused is the female of acutangula, but that has less infuscated 

 wings with still shorter ciliation at base of costa, shorter bristly hairs on 

 hind margins at sides of abdominal segments, and shorter hairs on legs. 



There were four specimens in the collection. 



18. Limosina luguhris Hal. — Described as follows : — 



" Sp. 18. L. luguhris. Nigra pubescens, alls denigratis ; halterihiis 

 fuscis, 



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

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

 bristles ; 2d joint of hind feet shorter : wings blackish : base of the 

 costal nerve less bristly, 2d ending half way between the 1st and 3d ; 

 cross-nerves not so distant. (Length | ; wings 1| line.) 



" Common in the same situations with No. 6." 



This species has in the male a yellowish face, jowls, and 3d joints of 

 antennae beneath, while in the female those parts are much darker. There is 

 only one pair of dorso-central bristles on thorax. The description of pusio 

 Zett. applies very well to this species, but no mention was made either by 

 Zetterstedt or Stenhammer of the bristly disc to scutellum ; however, the 

 specimens in Zetterstedt's Collection at Lund and the Swedish General 

 Collection at Stockholm under that name possess this character, and I have no 

 doubt represent Haliday's species. In the Trans. Linn. Soc, London, 1912, 

 I suggested the possibility of L. Thalhammeri Strobl. being also a synonym. 

 There are a number of specimens in Haliday's Collection. 



