64 
Psyche 
[March 
A NEW CCELAMBUS FROM A THERMAL SPRING IN 
NEVADA. 
By H. C. Fall, 
Tyngsboro, Mass. 
Coelambus bruesi n. sp. 
Narrowly ovate, perceptibly attenuate posteriorly. Head 
and elytra fuscotestaceous, the clypeus in front diffusely paler, 
the lateral margins of the elytra somewhat so. Prothorax ty- 
pically yellow, vaguely infuscate postero-medially. 
Head minutely alutaceous and finely sparsely punctate. 
Antennae pale basally, outer half infuscate. 
Prothorax finely margined at sides, these nearly straight 
and continuous with the sides of the elytra; surface polished, 
punctuation fine and rather sparse on the disk, becoming close 
and somewhat coarser along the front and rear margins. 
Elytra polished, sculpture consisting of finer and coarser 
punctures intermixed, the disparity more conspicuous in basal 
half. 
Body beneath black, polished; metasternum and coxal 
plates coarsely and closely punctate except at middle; venter 
coarsely punctate laterally at base, elsewhere finely and sparsely 
so. Legs either entirely pale or with the femora darker me- 
dially. Front and middle tarsi of male distinctly dilated, the 
2nd joint widest; anterior protarsal claw of male a little thicker 
and more strongly curved. 
Length 3 . 5 mm. ; width 1 . 8 mm. 
Described from a single pair ( cf $ ) taken by Prof. C. T. 
Brues at Ruby Valley, 65 miles south of Wells, Nevada, in a hot 
spring; temperature 39 . 2 °-40. °C. 
This species is clearly to be associated with compar and 
nigrescens by its dual system of elytral punctuation and the 
conspicuously wide second joint of the male protarsus. The 
form is narrower and color typically darker than in compar , in 
which also the punctuation of the upper surface is somewhat 
