LEPTIS. 



GENERIC CHARACTER. 



Antennae short, approximate, at base, triarticu- 

 late ; basal joint cylindric ; second cyathiform ; 

 third conic, not annulated, and terminated by a 

 long seta; stemmata three, situated on the ver- 

 tex ; proboscis and palpi exserted, the latter 

 pilose, with its second articulation elongated; 

 wings divaricated ; halteres naked ; onychii 

 three; abdomen consisting of seven segments. 



OBSERVATIONS. 



The species were arranged by Linne in his 

 genus Muse A. Fabricius, Meigen and Latreille, 

 in their earlier works, removed them from 

 Muse A, to form a distinct group, to which they 

 applied the name of Rhagio, including, as it 

 then stood, some species that have been since 

 separated, and now stand under the name of 

 Atherix. Those authors, in their subsequent 

 publications, finding that the appellation of Rha- 

 gio presented the inconvenience of a collision 



plate xiii. 



