1957] 
Werner — Anthicidae 
101 
0.59 mm. long, 0.49 wide; pronotum 0.61 mm. long, 0.42 
wide; elytra 1.15 mm. long, 0.56 wide at humeri, ca. 0.77 
at widest. Differences that are of a secondary sexual nature 
are : third exposed abdominal tergite not as arched ; 
pygidium absent; fifth visible abdominal sternite large, 
the hind margin almost evenly rounded, slightly ogival. 
Other differences that may indicate individual or popula- 
tion variation are : hind margin of head slightly excavated 
at the middle; elytra and appendages almost as dark as 
rest of body and the pubescent patches on the abdominal 
tergites dark. The scattered, erect tactile setae are ca. 
0.06 mm. long in the holotype, ca. 0.13 mm. in this speci- 
men and therefore much more conspicuous. The labrum 
extends beyond the clypeus when viewed from above. 
Holotype : & — Mud flats next to alkali lake at Salt 
Wells, Churchill Co., Nevada, May 31, 1950, F. G. Werner 
and W. L. Nutting. Deposited in the M. C. Z. Paratype: 
1 $ — Sand dunes near Stovepipe Wells, Death Valley, 
Inyo Co., California — April 2, H. B. Leech, in the Calif. 
Acad. Sci. 
