746 LIST OF DIPTERA. 



Cubital vein forked at much beyond half its length ; fore fork 

 nearly straight; hind fork slightly undulating. First externo- 

 medial vein much curved near the base; second almost straight; 

 third slightly curved, forming a slightly obtuse angle with the pra- 

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

 the anal very near the border. 



Asilus Gorgasus, Walk. 



Group 6. 



Mas. Corpus mediocre, dense hirtum. Caput subtus densis- 

 sime pilosum. Facies convexa. . Mystax magnus, densissime seto- 

 sus, fere ad antennas ascendens. Proboscis robusta, lanceolata. 

 Antennarum articulus lus 2o duplo longior ; 3us lanceolatus, lo 

 paullo longior ; arista 3o brevior. Thoracis latera setosa. Abdomen 

 thorace multo longius. Sexualia parva; forceps brevis, crassus, 

 arcuatus. Pedes robusti, spinosi, densissime pilosi. 



Radial as usual. Cubital vein forked at much beyond half its 

 length ; fore fork nearly straight; hind foik undulating. First and 

 second externo-medial veins straight; third very slightly curved, 

 forming a slightly obtuse angle with the prabrachial, joining the 

 fourth at rather far from the border. Subanal joining the anal near 

 the border. 



Asilus Triopas, Walk. 



Group 7. 



Fcem. Corpus vix mediocre, fere nudum. Caput subtus dense 

 pilosum. Facies convexa. Mystax sat dense setosus. Proboscis 

 sublanceolata. Thoracis latera setosa. Abdomen oblanceolatum, 

 basi utrinque fasciculatum, apice compressum, abdomen superans. 

 Pedes robusti, spinosi, non hirti. 



Radial as usual. Cubital vein forked at rather beyond half its 

 length : forks hardly curved, diverging from each other. First and 

 second externo-medial veins straight; third hardly curved, forming 

 a slightly obtuse angle with the praebrachial, joining the fourth far 

 from the border. Subanal joiniug the anal very near the border. 



Asilus Halmus, Walk. 



Group 8. 



Fcem. Corpus mediocre, sat longum. Corpus subtus dense 

 pilosum. Facies parum convexa. Mystax parvus, setis paucis. 

 Proboscis gracilis, linearis. Antennarum articulus lus 2o duplo 



