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PROCEEDINGS OF THE NATIONAL MUSEUM 



Figures ll-l'i.—Betaeus harrimani Rathbun: 17, frontal region, dorsal view, female; 18, 

 same, lateral view; 19, antennal scale; 26, tail fan. Betaeus longidactylus Lockington: 

 20, frontal region, dorsal view, female; 21, same, lateral view; 22, antennal scale; 27, tail 

 fan. Betaeus ensenadensis Glassell: 23, frontal region, dorsal view, male; 24, same, lateral 

 view; 25, antennal scale; 28, tail fan. 



