256 MUSCID.E. 



Dark-green. Mouth and palpi yellow. Face yellow, with white re- 

 flections. Third joint of the antenna, tibia, and tarsi tawny. Hind tibia 

 with a brown band. 



Rare ; found in marshes about Hollywood, near Belfast. (I.) 



3. Hydrocotyles, Hal. A. N. H. iii. 402. 3 (1839). communis ? 

 Desv. Obscure viridis, facie albissima, tibiis anterioribus et posticarum 

 apice palpis tarsisquefulvis. Long. 1 ; alar. 2 lin. 



Dark-green. Face brilliant-white. Palpi, tarsi, anterior tibia, and 

 tips of hind tibia tawny. 



Extremely rare; found at Hollywood, near Belfast. In the 

 collection of Mr. Haliday. (I.) 



4. porphyrops, Hal. A. N. H. iii. 402. 4 (1839). Nigricans, facie 

 ore palpisqueflavis, puncto frontali albo, oculis hyacinthinis, antennarum 

 articulo tertio tibiis apice tarsisque basifulvis. Long, -f ; alar. 1^ lin. 



Blackish, with a white frontal dot. Face, mouth, and palpi yellow. 

 Third joint of the antenna, tibia at the tips, and tarsi at the base tawny. 



This distinct and beautiful species has occurred but once at 

 Hollywood, near Belfast, among Mentha sylvatica, in a ditch. 

 The face is remarkably small, and the eyes are large and of an 

 exquisite purple tint ; they are dark green or brassy in most other 

 species. In Mr. Haliday' s collection. (I.) 



5. thoracica, Hal. A. N. H. iii. 402. 5 (1839). Facie alba, palpis 

 nigris, thorace cinereo obsolete lineato, tar sis posterioribus ferrugineis. 

 Long. 1-| ; alar. 2-g- lin. 



Face white. Palpi black. Thorax with indistinct grey stripes. Pos- 

 terior tarsi ferruginous. 



A very distinct species, of robust form, and the only one which 

 has any vestige of markings on the body. The discal-recurrent 

 vein is very near the margin. The middle and hind tibiae are 

 evidently thicker than the fore pair. Rare; found in June on 

 the sea-coast at Hollywood, near Belfast. In the collection of 

 Mr. Haliday. (I.) 



6. Ranunculi, Hal. A. N. H. iii. 402. 6 (1839). Nigro-olivacea, 

 facie alba, tarsis posterioribus basi palpisque ferrugineis, vena discali trans- 

 versa subobliqua. Long. ]i; alar. 2^ lin. 



Blackish olive-colour. Face white. Palpi ferruginous. Things with 

 the discal transverse vein slightly oblique. Posterior tarsi ferruginous at 

 the base. 



Abundant in meadows and marshes. This is probably the va- 

 riety of H. griseola of which Fallen makes mention, and erro- 

 neously considers its white face to be a sexual distinction. (E. I.) 



7. griseola, Pal. Act. Holm. 1813. 250. 9. 5 (1813); Meig. ; 



