84 



PROCEEDINGS OF THE NATIONAL MUSEUM vol. io8 



/ 



Figure 10, — a-d, Rivellia micans Loew: a, wing; b, lateral aspect of ninth tergite and 

 proctiger of male; c, lateral aspect of aedeagus; d, dorsal aspect of aedeagus. e-h, R. 

 snerini Blanton: e, v/ing;/, lateral aspect of ninth tergite and proctiger of male; g, lateral 

 aspect of aedeagus; h, dorsal aspect of aedeagus. i-l, R. cognata Cresson: i, wing; j, 

 lateral aspect of ninth tergite and proctiger of male; k, lateral aspect of aedeagus; /, dorsaJ 

 aspect of aedeagus. m, R. socialis, new species: wing. 



GOVERNMENT PRINTING OFFICE: 1986 



