LIST OF DIPTERA. 15 



border. Discal veinlets forming two sides of the oblong hexagonal 

 discal areolet. Median veinlet distinct. Humeral, subcostal, medi- 

 astinal, radial, first cubital, second cubital, praebrachial, pobrachial, 

 anal, axillary, subapical, discal, and four externo-medial areolets 

 complete, as are also the axillary and the subaxillary lobes. Sub- 

 apical areolet occupying the tip of the wing. 



Mexico. 

 1. Cyphomyia elegans. 



Nigra ; frons aurantiaca ; thorax vittis duabus et abdomen limbo 

 viridibus ; scutellum et pedes flava ; alee siibflavescentes. 



Cyphomyia elegans, Wied. Auss. Zweifl. ii. 58, 8. 



South America. 



A. Thorax niger. 



A. Abdomen metallicum. 



a. Alae nigro-fuscae. 



a. Caput album. - leucocephala, Hoffm. 



b. Caput nigrum. Coprates, Walk 



b. Alae fuscescentes. - albitarsis, Fabr. 



c. Alae fuscae, basi maculaque hyalinis. - fenestrata, Macq. 



d. Alae cinereae. - - - - inermis, Wied. 



e. Alae hyalinae. fascipes, Walk. 



a. Scutellum inerme. 



b. Scutellum armatum. 



a. Caput ferrugineum. - maculata, Fabr. 



b. Caput nigrum. - claripennis, Macq. 



B. Abdomen fulvum. - costalis, Walk. 



B. Thorax metallicolor. 



A. Thorax vitta aurato. 



a. Alae nigrae. - -..'■- - - auriflamma, Hoffm. 



b. Alae fuscae. chrysodota, Perty. 



B. Thorax non aureo vittatus. 



a. Alae cinereae. 



a. Antennae nigrae. - aurifrons, Wied. 



b. Antennae fulvae. ornata, Walk^ 



b. Alae fuscae. ------ cyanea, Fabr ^ 



c2 



