LIST OF DIPTERA. 723 



Group 1. 



Fcem. Corpus parvum, gracile. Caput subtus parce pilosmn. 

 Facies parum convexa. Mystax dense setosus, ad antennas fere 

 ascendens. Proboscis lanceolata. Antennaruin articulus lus 2o 

 duplo lougior; 3us lanceolatus, lo non lougior; arista 3o vix lon- 

 gior. Abdomen oblanceolatum, thorace duplo longius, alas non 

 superans, apicem versus compressum et substylatum. Pedes validi, 

 spinosi, parce hirti ; antici longissime spinosi. 



Cubital vein very long, forked at much before half its length ; 

 fore fork nearly straight; hind fork slightly undulating. Externo- 

 medial veins nearly straight; third forming an obtuse angle with 

 the preebrachial, joining the fourth far from the border. Subanal 

 joining the anal near the border. 



Asilus atratulus, Walk. 



Group 2. 



Fcem. Corpus latum, dense hirtum. Caput subtus pilosum. 

 Facies subconvexa. Mystax sat dense setosus. Proboscis crassa, 

 lanceolata. Abdominis dimidium basale obconicum, thorace non 

 longius ; dimidium apicale stylatum. Pedes crassi, spinosi, parce 

 hirti. 



Radial vein straight, curved at its tip, joining the subcostal at 

 some distance from the tip of the latler. Fore fork of the cubital 

 hardly undulating ; hind fork rather deeply undulating. First 

 externo-medial curved near the base; second almost straight ; third 

 slightly curved, forming a slightly obtuse angle with the paasbrachial, 

 joining the fourth at some distance from the border. Subanal 

 joining the anal at some distance from the border. 



Asilus Philus, Walk. 



Group 3. 



Corpus mediocre aut majusculum, fere nudum. Caput subtus 

 parce pilosum. Facies subconvexa. Mystax parce setosus. Pro- 

 boscis gracilis, lanceolata. Antennarum articulus lus 2o plus 

 duplo longior; 3us lanceolatus, lo multo brevior; arista 3o duplo 

 longior. Thoracis abdominisque latera parce setosa. Thorax 

 abdomine duplo latius. Abdomen oblanceolatum, thorace fere 

 duplo longius, alas superans. Pedes robusti, spinosi, parce hirti. 

 Alee dilatatse ; venae costalis et subcostalis coujunctae. Mas. — 

 PART III. 3 R 



