i 



LIST OF DIPTEEA. 361 



11. My DAS CLAVATCS. 



Niger ; abdominis scgmentum 2um aurantiacum ; aim nigra. 



"Ji:^usca clavata, Drurg, III. i. pi. 44, f. 1 ; ii. Append. 

 Midas fihitus, Wied. Mon. Mid. pi. 53, f. 8. 

 Bibio illucens, Fabr. Si/st. Ent. 756, 1. 

 Midas clavatus, Westw. Arc. i. 51, 14. 



Nortli America. 



12. MVDAS lOPTERUS. 



Niger; anienncB breves ; abdomen tdrinque maculis duabus flavi- 

 dis ; alcB chahjbea. 



Midas iopterus, Wied. 

 North and South America. 



Mexico. 



A. Abdomen totum nigrum. 



A. Antennaj nigrse. - - - . - senilis, Westw. 



B. Antenna; apice rubidae. - - - rubidapex, Wied. 



B. Abdomen fasciis iribus flavis. - - intenuptus, Wied. 



C. Abdomen fasciis sex flavis. ... basalis, Westw. 



13. Mydas senilis. 



Totus niger cinereo setosus, barba cinerea ; alee fuscance, costa 

 magis fulvescente, venis posticis fuseo marginalis, areola 

 media versus marghiem posticum venam brevem ad marginem 

 currentem haud emittente. 



Midas senilis, Westw. Arc. Ent. i. 52, 21. 

 Mexico. 



14. MyDAS EUBroAPEX. 



Niger ; antenncB apice ruhidce ; alee rubido-Jlavce, extrema basi 

 nigrce. 



Midas rubidapex, Wied. Nova Acta Acad. Nat. Cur. xv. 1, pi. 1, 

 f. 2. ; Auss. Ziveifi. ii. 626, 27. Westic. Arc. Ent. i. 51, 4. 



Mexico. 



