LIST OF DIPTERA. 



357 



AnteniiiB 5- aut 4-articulat8e. Ocelli nulli. Sub-fam. 1. Mydasites. 

 AiUennae S-avticulatae. Ocelli tres. 

 Alffi areola radiali aperta. - - - 2. Dasypogonites. 

 Alae areola radiali clausa. 



Arista nulla. 3. Laphrites. 



ArisU elongata. .... - 4. Asilites. 



Sub-fara. 1. MYDASITES. 



Caput vertice concava. Facies siepissime mystacina. Ocelli 

 uulli. Proboscis labiis apicalibus crassis. Palpi teuues, acumi- 

 iiati, nudi. Pedes setosi. Alae areola subtnarginali clausa, areolis 

 externo-medialibus tribus aut quatuor. 



Mydasii, Macq. 

 Aplocera, Macq. 



A. Antennffi 5-articulatae. 



A. Proboscis brevis. 



A. Antennae articulo 5o elongate. 



a. Abdomen elongatum. - - - - 1. Mydas. 

 h. Abdomen longissiraum. - - 2. Dolichogaster. 



B. Antennae articulo 5o rotundato. - - 3. Rhopalia. 



B. Proboscis elongata, tenuis. - - - 4. Cephalocera. 



B. Antennae 4-articulataB. 5. Apiocera. 



Genus 1. MYDAS. 



Proboscis brevis. Antennae 5-articulatBB, sat longEB, articuli 

 lus et 2us breves, 3us et 4us longi, angusti, 4us 3o brevior, 5us 

 latior, tusiformis. 

 Mydas, Fahr. ; Meig. ; Macq. 

 Midas, Wied. ; Westw. 



Mediastinal vein joining the costal at rather beyond two-thirds 

 of the length of the wing. Subcostal ending at a little in front of 

 the tip. Radial and the two branches of the cubital joining the 

 subcostal at equal distances from each other, the hind branch end- 

 ing at very near the tip of the subcostal. Cubital ejecting the 

 stump of a vein from its fork. Subapical or first externo-medial 

 vein forming a curve nearly parallel to that of the hind branch of 



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