352 PROCEEDINGS OF THE NATIONAL MUSEUM Vou. 113 
0.5 mm. 
O.S mm 
D1 
0.5 mm. 
O.Smm, 
Ficures 50-54.—Male genitalia, dorsal and lateral views: 50, Smicronyx cinereus Mot- 
schulsky, and spiculum gastrale labeled 50a; 51, S. cuscutiflorae Pierce; 52, S. obscurus, 
new species; 53, S. tychoides LeConte; 54, S. sculpticollis Casey. 
