LIST OF DIPTEBA. 427 



Mexico. 



Group 1. 



Corpus maximum, elongatura, pubescens. Caput thorace 

 paullo angustius. Facies plana. Mystax setis paucis apud epi- 

 stoma armatus, AntenniE sat longae ; artioulus lus 2o longior; 3us 

 linearis, arista vix ulla, lo et 2o conjunctira niullo longior. Tho- 

 racis latera setosa. Abdomen apice spinosum. Pedes validi. 



Microstylura, p., Macq. Dipt. Exot. i. 



Forks of the cubital vein slightly curved, their base very little 

 nearer than the end of the discal areolet to the tip of the wing. 

 First and second externo-raedial veins proceeding straight to the 

 border ; third united to the fourth at some distance from the border. 

 Subanal near the anal on the border. Discal areolet very long, 

 widening outward. 



102. DaSYPOGON MAGNIFICUS. 



Foem. Ater ; facies alba, nitens ; ahdmnen rufum ; onychia tes- 

 tacea ; aim fuscce, bast nigro-fuscce. 



Fern. Deep black. Face white, shining. Mystax with black 

 bristles. Abdomen deep red; tip with black spines. Onychia tes- 

 taceous. Wings brown, blackish brown at the base ; disks of the 

 areolets gray ; veins tawny, piceous towards the base. Halteves tes- 

 taceous. Length of the body 15 lines; of the wings 28 lines. 



a. Mexico. Presented by Mrs. Rouquette. 



Group ? 



A. Tibiae anticae calcaratae. Group Dasypogon, Loew. P 



nigripennis, Macq. 



B. Tibiae anticae non calcaratae. 



A. Mystax albus. - - . . dimidiatus, Macq. 



B. Mystax riavescens aut fulvus. 



A. Abdomen fasciis fulvis. . . - mexicanus, Macq. 



B. Abdomen incisuris albidis. - . - nigritarsis, Macq. 



PART II. 2 P 



