430 PROCEEDINGS OF THE NATIONAL MUSEUM VoL. 92 
Pronotum about 1.20 times as wide as long, widest posteriorly ; 
sides feebly, arcuately converging on posterior third, then more 
stongly arcuately narrowed, strongly constricted in anterior third, 
broadly rounded in front; surface black, shining, rather strongly, 
transversely impressed opposite anterior constriction; disk with very 
deep, close, moderately coarse punctures, somewhat roughened but not 
truly granulate; punctures finer and closer in front, rougher, sub- 
granulate at sides; median line not elevated, slightly indefinitely im- 
pressed at each side on posterior fourth; lateral calli nearly entirely 
lacking; hairs fine and short, distinctly longer at each side just an- 
terior to position of lateral calli. 
Elytra slightly wider than pronotum, slightly widest behind mid- 
dle, about 1.34 times as long as wide; sides subparallel on anterior 
two-thirds, moderately broadly rounded behind; surface brilliantly 
shining, reddish brown; striae nearly as wide as interspaces, strongly 
impressed, with punctures rather large, very shallow, moderately 
spaced, coarser but still shallow at sides, smaller and deeper on de- 
clivity; interspaces slightly wider than striae, convex, rugose, gran- 
ulate, moderately punctured, confusedly, lunately asperate at base, 
granules confused, coarse but low and rounded, becoming uniseriate 
serrations near declivity on first and alternate interspaces; appear- 
ing glabrous, but with sparse, minute hairs. Declivity (pl. 39, fig. 11) 
with first, third, and alternate interspaces rather strongly elevated 
and strongly serrate; first interspace often with some serrations 
lacking on apical portion, rather sparsely, very finely punctate 
median to serrations, with a few minute, fine hairs often entirely 
abraded and always very inconspicuous; third interspace regularly, 
strongly serrate to apex, where it meets ninth interspace, which also 
has a few serrations; fifth and seventh with three to five smaller 
serrations; second interspace much narrower than on disk, often 
obsolescent behind, flat, devoid of punctures and serrations. Anterior 
face of mesosternum oblique. 
Female.’—Black with elytra dark reddish brown, 2.8 mm. long, 
about 2.18 times as long as wide. Frons slightly flattened, rather 
coarsely granulate-punctate, with a distinct, elevated median carina. 
Pronotum with sides arcuately convergent, moderately constricted 
anteriorly, surface of disk as in male; caudal half of proepisternum 
smooth, impunctate except at margin. Elytra with striae and inter- 
spaces of disk as in male, hairs slightly more conspicuous; declivity 
(pl. 39, fig. 10) similar to that of male, but with serrations smaller 
and hairs more abundant and coarser, some of them scalelike. 
Type locality.—Oregon. 
Host—Not recorded. 
5 Description prepared from the first specimen in LeConte’s type series. 
