GEOMYZIDES. 231 



cubital ending at a little in front of the tip ; prsebrachial ending at the 

 tip of the costal ; pobrachial ending at near two-thirds of the length ; 

 discal transverse straight, nearly upright, parted by more than twice 

 its length from the prsebrachial transverse, and by about thrice its lengtli 

 from the border. Halteres and legs yellow. Abdomen with four ap- 

 parent segments ; first very long. 

 Not common. (E.) 



3. maura, Fal. Oscinid. 6. 8 (1820) ; Meig. ; Mcq. ; Zett. Viridi- 

 nigra, arista halteribusque albis, alls fiiscis, pedibus fulvis, tibiis pos- 

 ticis femoribusque nigris. Long. -|; alar, li lin. 



Black, shining, dlgldhj tinged with green. Sixth joint of the antennae 

 and halteres white. IFings brown ; costal vein ending at the tip ; sub- 

 costal ending at about one-third, and radial at about two-thirds of the 

 length ; cubital ending in front near the tip ; prsebrachial ending at 

 the tip of the costal ; pobrachial joining the border ; discal transverse 

 straight, nearly upright, parted by more than its length from the prai- 

 brachial transverse, and by about thrice its length from the border. 

 Legs tawny ; femora and hind tibiae black. 



Common. (E.) 



4. brevipennis, Meig. Zw. vi. 159. 49. pi. 61. f. 19, 20 (1830). 

 Testacea, verticis macula nigra, thorace fusco-hivittato, alis limpidis, ab- 

 domine nigro macula basali testacea. Long. 1^; alar. 2 lin. 



Testaceous. Head with a black spot about the ocelli. Sixth joint 

 of the antennae black. Thorax with a hroicn stripe on each side. Wings 

 limpid. Abdomen black, with a testaceous spot at the base. 



Not common. (E.) 



The following additional species of Oscinis have been recorded 

 as British : — 



1. albiseta, Meig. 5. Frit? L. 



2. pratensis, Meig. 6. nigerrima, Mcq. 



3. laevigata, Fal. 7. cincta, Meig. 



4. viudicata, Meig. 8. albipalpis, Meig. 



Subfamily VIII. GEOMYZIDES. 



Geomyzides, Fal. Geom. (1830). 



Alarum vena suhcostalls et medlastlnalis conjunctce ; radialis apicemfere 

 attlngens ; prahrachialis transversa ah al/e hasi remota ; areola; pobra- 

 chlalis et analis indistlnctcB vel nulla. Metatarsi postlcl graclles. 

 Subcostal and mediastinal veins united ; radial ending at much beyond 



three-fourths of the length of the tclng ; prccbrachlal transverse distant 



from the base of the wing ; pobrachial and anal areolets indlstmct or none. 



Hind metatarsi slender. 



