300 LIST OF DIPTEBA. 



porreetas, basi approximate. Femora postica subtus unispinosa. 

 AlaB divaricatse. 



Acanthomera, Wied. Dipt. Exot. i. 61 ; Auss. Zweifi. i. 107. 



Costal vein ending at the tip of the wing. Mediastinal ending 

 at a little before three-fourths of the length. Subcostal ending at a 

 little beyond three-fourths of the length. Eadial ending at about 

 five-sixths of the length. Fore fork of the eubital undulating, end- 

 ing at some distance in front of the tip of the wing ; hind fork ending 

 at far behind the tip of the wing. First and second submarginai 

 veins separate, converging towards the border; third and fourth 

 united at some distance from the border. Subanal and anal veins 

 united near the border. Discal areolet hexagonal, broadest at its 

 basal end. 



West Indies. 



1. ACANTHOMEBA TABANINA. 



Ferrugineus ; thorax nigro quinquevittatus ; abdomen fuscum, 

 marginibus later alibus baseos nigris ; alee pallide ferruginei, 

 maculis obscurioribus. 



Pantophthalmus tabaninus, Thunberg, Act. Soc. Gothoburg, 1819, 



111, 7, pi. 7, f. 2. 

 Acanthomera tabanina, Wied. Auss Zweifi. i. 110, 4. 



South America. 



2. Acanthomera magnifica. 



Acanthomera magnifica, Diptera Saundersiana, Pt. 1, 74, pi. 1, 

 f. 1. 



A. Abdomen nigrum. 



A. Thorax flavo vittatus. - Heydenii, Wied. 



B. Thorax non vittatus. - picta, Wied. 



B. Abdomen fuscum aut pallidum. 



A. Abdomen albo notatum. 



a. Thorax rubido-fuscus. - seticornis, Wied. 



b. Thorax glaucescente-cinereus. - - flavipes, Macq. 



c. Thorax cacaino fuscus. - immains, Wied. 



B. Abdomen albo non notatum. 



a. Abdomen vitta nigra. ... vittata, Wied. 



b. Abdomen nigro marginatum. - - crassipalpus, Macq. 



