616 LIST OF DIPTEEA. 



praebrachial, which is much curved, joining the fourth far from the 

 border. Subanal joining the anal very near the border. 



Eras rufibarbis, Macq. 



Group 4. 



Mas. Corpus elongatum, parce hirtum. Caput subtus den- 

 sissime pilosum. Facies valde convexa. Mystax dense setosus. 

 Proboscis lanceolata. Antennarum articulus lus 2o duplo longior; 

 3us longieonicus, lo brevior ; arista 3o fere triplo longior. Thoracis 

 latera et scutellum setis nonnulfis. Abdomen alas superans. Sexu- 

 alia maxima. Pedes validi, spinosi, hirti. 



Eadial vein almost straight, joining the subcostal rather far 

 from the tip of the latter. Cubital forked at very much beyond half 

 its length; forks converging towards each end; lore fork very 

 slightly curved, forming at its base an obtuse angle, which emits a 

 branch ; the latter is much longer than the basal side of the angle ; 

 hind fork rather deeply curved. First, second and third externo- 

 medial veins very slightly curved ; third forming an almost right 

 angle with the praebrachial, joining the fourth at far from the 

 border. Subanal joining the anal at some little distance from the 

 border. 



Erax Bastardi, Macq. 



Group 5. 



Mas. Corpus parce pilosum. Caput subtus densissime hir- 

 tum. Facies valde convexa. Mystax densissime setosum. Proboscis 

 linearis. Antennarum articulus lus 2o duplo longior ; 3us longi- 

 conicus, lo brevior; arista 3o triplo longior. Thoracis latera parce 

 setosa. Sexualia maxima, pilosa. Pedes robusti, pilosi, spinosi. 



Male. Radial vein straight, joining the subcostal at rather far 

 from the tip of the latter. Cubital forked at very much beyond half 

 its length ; forks slightly curved, slightly converging towards each 

 end ; fore fork forming at its base an obtuse anjje, which emits a 

 branch that is shorter than its basal side. First and second externo- 

 medial veins nearly straight; third slightly curved, forming a nearly 

 right angle with the praebrachial, joining the fourth far from the 

 border. Wings slightly or hardly dilated along the costa at two- 

 thirds of the length. 



Erax sestuans, Linn. 



Group 6. 



Corpus mediocre, parce hirtum. Caput subtus pilosum. Facies 

 apud epistoma valde convexa. Mystax dense setosus. Proboscis 



