LIST OF DIPTERA. 733 



Proboscis gracilis, sublanceolata. Thoracis et abdominis latera 

 setis paucis. Abdomen sublineare, thorace fere triplo longius. 

 Sexualia parva ; forceps analis, latus, arcnatus. Pedes validi, spi- 

 nosi, fere nudi; femora subincrassata. 



Radial vein curved at its tip. Cubital vein forked at very 

 much beyond half its length ; fore fork almost straight ; hind fork 

 slightly undulating. First and second extern o-medial veins nearly 

 straight ; third curved, forming an obtuse angle with the prabra- 

 chial, joining the fourth close to the border. Subanal joining the 

 anal on the border. 



Asilus Jacksonii, Macq. 



Group 8. 



Mas. Corpus majusculum, fere nudum. Caput subtus dense 

 pilosura. Facies subconvexa. Mystax sat dense setosus, antennas 

 non attingens. Proboscis lanceolata. Antennarum articulus lus 

 2o plus duplo longior ; 3us lanceolatus, lo squabs; arista 3o inulto 

 longior. Thoracis latera rarissime setosa. Abdominis dimidium 

 fere basale pilosum, alas paullo superans. Sexualia parva ; forceps 

 arcuatus. Pedes sat graciles, rarissime spiuosi, subpubescentes. 



Kadial vein straight, joining the subcostal at a short distance 

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

 its length ; fore fork much curved at its base ; hind fork slightly 

 undulating. First externo-medial very much curved at its base; 

 second straight; third slightly curved, forming a hardly obtuse 

 angle with the prrebrachial, joining the fourth at far from the bor- 

 der. Subaual joining the anal far from the border. 



Asilus Centho, Walk. 



Group 9. 



Corpus maximum, pubescens. Caput subtus densissime pilo- 

 sum. Facies antice convexa. Mystax densissime setosus. Pro- 

 boscis sublanceolata. Antennarum articulus lus 2o plus duplo 

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

 Thoracis latera setis paucis. Pedes robusti, hirti, spinosi. Mas. — 

 Abdomen alas paullo superans. Sexualia mediocria. Fcem. — 

 Abdomen alas vix superans, usque ad apicem pubescens. 



Radial vein nearly straight, joining the subcostal at a con- 

 siderable distance from the tip of the latter. Cubital forked at very 

 much beyond its middle ; fore fork hardly curved ; hind fork undu- 

 lating. First externo-medial very much curved near its base ; 



