630 LIST OF DIPTERA. 



angle with the praebrachial, joining: the fourth far from the border. 

 Suhanal joining the anal very near the border. 



Erax Bardyllis, Walk. 



In this species, as in some others, the basal side of the angle of 

 the fore fork of the cubital is occasionally double, and the third ex- 

 terno-medial vein is continued across the fourth to the border. 



Group 10. 



Foem. Corpus vix hirtum. Caput subtus densissirae pilosum. 

 Facies valde convexa. Mystax dense setosus. Proboscis robusta, 

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

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

 scutellum parce setosa. Abdomen alas superans, triente apicali 

 stylata. Pedes robusti, spinosi, parce hirti. 



Cubital vein forked at rather beyond half its length ; forks very 

 slightly curved, approaching much nearer each other towards the 

 base than towards the tips ; fore fork forming at its base a hardly 

 obtuse angle ; the latter emitting a branch which about equals it in 

 length. First and second externo-medial veins almost straight; 

 third very slightly curved, forming a slightly obtuse angle with the 

 prabrachial, joining the fourth far from tie border. Subanal join- 

 ing the anal close to the border. 



Erax fuscus, Wied. 



Group 11. 



Corpus sat gracile, parce hirtum. Caput subtus densissime 

 pilosum. Facies valde convexa. Mystax densissime setosus. Pro- 

 boscis linearis. Antennarum articulus lus 2o plus duplo longior; 

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

 latera et scutellum parce setosa. Mas. — Abdomen alas vix super- 

 ans. Sexualia magna. Foem. — Abdomen alas paullo superans, 

 triente apicali stylata. 



Cubital vein forked at very much beyond half its length ; forks 

 hardly undulating, approaching each other at the base and near the 

 tips ; fore fork forming at its base a slightly obtuse angle, which 

 emits a branch ; the latter is not longer than the basal side of the 

 alible. First and second externo-medial veins nearly straight; 

 third hardly curved, forming a slightly obtuse angle with the prs- 

 brachial, joining the fourth far from the border of the wiug. Sub- 

 anal joining the anal very near the border. 



Erax stylatus, Fabr. 



