648 LIST OF DIPTERA. 



Group 1. 



Fcem. Corpus maximum, parce hirtum. Caput subtus den- 

 sissime pilosum. Facies parum convexa. Mystax dense setosus. 

 Proboscis crassa, lanceolata. Antennarum articulus lus 2o lon- 

 gior; 3us longiconicus, compressus, lo multo brevior; arista 3o 

 plus duplo longior. Thoracis latera et scutellum parce setosa. 

 Abdomea oblanceolatum pilosum, apiceni versus cyliudricum, tho- 

 race triplo longius. Pedes validi, spiuosi, hirti. 



Cubital vein forked at half its length ; fore fork forming a 

 nearly right angle at its base ; hind fork slightly curved. First 

 externo-medial slightly curved near its base ; second straight; third 

 much curved, joining an obtuse angle with the prasbrachial, joining 

 the fourth rather far from the border. Subanal joiniug the anal at 

 some distance from the border. 



Proctacauthus heros, Wied. 



Group 2. 



Fcem. Corpus sat gracile. Caput subtus pilosum. Facies 

 apud epistoma subconvexa. Mystax setis plurimis. Proboscis valida, 

 lanceolata. Antennarum articulus 3us longiconicus, lo non longior ; 

 arista 3o multo longior. Thoracis latera parce setosa. Abdomen 

 oblanceolatum, fere uudum, alas longe superans, thorace triplo 

 longius. Pedes validi, breviter spinosi, non pilosi. 



Wings rather short. Cubital vein forked at beyond half its 

 length ; fore fork forming an obtuse angle at its base, nearly straight 

 from thence to its tips; hind fork slightly curved, approaching the 

 fore fork at each eud. First, second and third externo-medial veins 

 nearly straight ; third forming an obtuse anjle with the prasbrachial, 

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

 on the border. 



Proclacanthus brevipennis, Wied. 



1. Proctacanthcs longus. 



Fuscanus ; abdomen cinerascens ; pedes subbadii ; alee flavidce. 



Asilus longus, Wied. Dipt. Exot. i. 183, 1 ; Auss. Zweiji. i. 426, 3. 

 Proctacauthus lougus, Macq. Dipt. Exot. i. 2, 123, 6. 



Georgia. Brazil. 



