LIST OF DIPTERA. 699 



Cul)ital vein forked at much before half its length ; fore fork 

 hardly undulating ; hind fork nearly straight. First and second 

 externo-medial veins hardly curved ; third slightly curved, forming 

 an obtuse angle with the praebrachial, joining the fourth far from 

 the border. Subanal joining the anal very near the border. 



Asilus hebes, Walk. 



Group 5. 



Mas. Corpus mediocre, parce hirtum. Caput subtus dense 

 pilosum. Facies parum convexa. Mystax raro setosus. Probos- 

 cis gracilis, linearis. Antennarum arliculus lus 2o duplo longior; 

 3us longiconicus, 2o paullo longior ; arista 3o plus duplo longior. 

 Thoracis latera parce setosa. Abdomen sublineare, thorace doii 

 duplo longius, alas non superans. Sexualia parva. Pedes robusti, 

 parce spinosi, non hirti. Alae latiusculae. 



Cubital vein forked beyond half its length ; fore fork hardly 

 undulating; hind fork almost straight. First and second externo- 

 medial veins almost straight ; third very slightly curved, forming an 

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

 border. Subanal joining the anal near the border. 



Asilus Baletus, Walk. 



Group 6. 



Mas. Corpus mediocre, parce hirtum. Caput subtus dense 

 pilosum. Facies parum convexa. Mystax vix dense setosus. 

 Proboscis sublauceolata. Antennarum articulus lus 2o triplo 

 longior ; 3us lanceolatus, 3o brevior ; arista 3o fere duplo longior. 

 Thoracis latera et scutellum setosa. Abdomen subcylindiicum, 

 thorace plus duplo longius, alas superans; latera basim versus 

 pilosa. Sexualia parva. Pedes validi, parce spinosi, vix hirti. 



Cubital vein forked at hardly before half its length ; forks 

 almost straight, with the exception of the obtuse angle by the base 

 of the fore fork. First and second externo-medial veins very slightly 

 curved, forming an obtuse angle with the praebrachial, joining the 

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

 border. 



Asilus longiusculus, Walk. 



Group 7. 



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

 pilosum. Facies plana. Mystax setis paucissimis. Proboscis 



PART III. 3 P 



