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PROCEEDINGS OF THE NATIONAL MUSEUM 



Figure 8. — a-c, Rivellia Ursa, new species: a, wing; b, lateral aspect of ninth tergite and 

 proctiger of male; c, lateral aspect of aedeagus. d-g, R. occulta Van Der Wulp: d, wing; 

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

 dorsal aspect of aedeagus. 



