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 prabrachial transverse, and by about thrice its length 

 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 fuscis, pedibus fulvis, tibiis pos- 

 ticis femoribusque nigris. Long. -|; alar. 1^ lin. 



Slack, shining, slightly tinged icith green. 'Sixth joint of the antenna? 

 and halteres white. Wings brotcn ; 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 pra3- 

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

 Legs tawny ; femora and hind tibia3 black. 



Common. (E.) 



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

 Testacea, verticis macula nigra, tJwrace ftisco-bivittato, alis limpidis, ab- 

 domine nigro macula basali testacea. Long. \\ ; alar. 2 lin. 



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

 of the antennae black. Thorax with a brown stripe on each tide. 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. laBvigata, Fal. 7. cincta, Meig. 



4. vindicata, Meig. 8. albipalpis, Meig. 



SUBFAMILY VIII. GEOMYZIDES. 



GEOMYZIDES, Fal. Geom. (1820). 



Alarum vena subcostalis et mediastinalis conjunct^ ; radialis apicemfere 

 attingens ; preebrachialis transversa ab alee basi remota ; areoke pobra- 

 chialis et analis indistincta vel nulla. Metatarsi postici graciles. 

 Subcostal and mediastinal veins united ; radial ending at much beyond 



three-fourths of the length of the icing ; prcebrachial transverse distant 



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



Hind metatarsi slender. 



