Collin — Notes on Specimens of Borhoridce and some Ephjjdridce. 249 



" Deep black without gloss : pubescence of the arista abundant, 

 whitish : the feet short : middle shanks almost naked : poisers black : 

 wings white hyaline ; nerves colourless, the costal blackish, not thickened : 

 the 2d nerve scarcely reaches to the middle of the rib, the 3d is arched 

 and terminates before the tip of the wing ; the marginal cell is therefore 

 exceedingly small, the submarginal wide and oblong ovate : the cross- 

 nerves are almost contiguous. (Length not |, wings 1 line.) 



" Occurs along with No. 6, but very rare : Mr. Walker has taken it 

 near London." 



Seven specimens in tlie Collection of this very distinct, though minute, 

 species. 



22. Limosina melania Hal. — Originally described as follows : — 

 " BB. OeuU hispiduli. 

 " Sp. 22. L. melania. Atra opaca alis hyalinis. 

 " Eesembles the preceding very much : deep black, opaque : eyes 

 small, with minute erect hairs ; arista thickly pubescent : legs piceous, 

 middle shanks almost without bristles : poisers black : wings hyaline : 

 nerves darker, very delicate, the costal blackish ; 2d extending nearly 

 half way between the 1st and 3d ; the latter scarcely arched, nearer 

 to the tip of the wing than in the last species : interval of the cross- 

 nerves equal to the principal one. (Length not | line.) 

 " Found with the last, but still more uncommon." 



Three specimens in the Collection. L. atoma End. also has pubescent 

 eyes, but the cubital vein is strongly curved upwards to costa as in 

 mgerrima. 



Limosina acutangida Zett. — This species was known to Haliday under the 

 name Heteropiera pusilla Fin., in which he followed Meigen's and Macquart's 

 interpretation of Fallen's species. There were two males and one female in 

 the collection, but the female was probably included by Haliday under 

 his vagans as it does not possess the sloping cross-vein of acutangida $ . 

 Zetterstedt's name must be used for this species, because no one recognized the 

 fact that Fallen's pusilla was different from Meigen's piasilla until Zetterstedt 

 differentiated the latter under the name acutangula. 



