OF WASHINGTON, VOLUME XI, 19Q9. 199 



and prothorax together, strongly incrassau- toward apex; joints 2 

 and 3 subequal ; 4 longer than wide: 5 about square: 6-H> gradual I 

 thicker, 10 almost twice as wide as long; 11 a little longer than 9 

 and 10 together, oval, pointed at tip. Head narrower than the pro- 

 thorax, almost longer than wide, sides subparallel ; moderately densely, 

 a little coarsely punctate; eyes small; tempora almost twice as Ion: 

 as the eyes; gense entirely margined. Prothorax narrower than i' 

 elytra, but little wider than long, widest before the middle: sides 

 toward apex rounded, toward base slightly sinuate: base a little wider 

 than apex; hind angles almost rectangular; with a transverse ba-ol 

 impression and two very faint,, parallel, longitudinal channels in the 

 basal half; moderately densely, a little coarsely, asperulately punctate. 

 Elytra scarcely one-fourth longer and a little wider than the pro- 

 thorax, together wider than long, outer hind angles moderately emar- 

 ginate ; rather sparsely, very coarsely, granulately punctate. Abdomen 

 broad, widest in the middle, narrowed in front and behind : in the 

 middle as wide as the elytra ; segments 3-5 strongly transversely 

 impressed at base: rather sparsely, very coarsely punctate, behind a 

 little more sparsely and more finely so. There arc no sexual char- 

 acters on the elytra nor on the abdomen. 

 Length 3 mm. 



Type No. 10592, my collection. 



Fifty specimens from Tahoe City and Tallac, California, 

 sifted under decaying vegetable matter: taken also in evening 

 flight. I have also specimens in my collection taken in the 

 San Bernardino Mountains at Sugar Pine. Summer dale, and 

 Mohawk, all in California. 



The mouthparts are those of other species of the genus 

 HoUtocIiara. The species is unique in our fauna on accoun! 

 its uniform color and the lack of sexual characters of the 

 male. 



I found my specimens under deep layers of decaying leave- 

 in the coniferous forests around Lake Tahoe. They were 

 feeding probably on minute fungi. Although winged, they 

 slinw an unmistakable tendency toward becoming apter 

 in the course of time. The rather abbreviated elytra, the 

 dilated abdomen, and the pale uniform color may be men- 

 tioned as proof of this tendency. 



