396 PROCEEDIKIGS OF THE NATIONAL MUSEUM vol. 94 



LEPERISINUS OREGONUS. new species 



Female. — Piceous-brown, with elytra and anterior border of pro- 

 notum lighter; 2.8-3.3 mm. long, holotype 3.00 mm. long, 1.91 times 

 as long as wide ; allied to calif omicus Swaine and hoferi, new species, 

 and intermediate in size between the two, 



Frons very wide between eyes, frontal rectangle 0.61 as long as 

 wide; broadly, rather deeply concave, more strongly above; surface 

 shining except where hidden by vestiture, faintly reticulate, moder- 

 ately closely, finely punctate at sides, subgranulate-punctate above, 

 median eighth between eyes with few or no punctures ; sides and up- 

 per frons with rather coarse, moderately long, cinereous hairs, di- 

 rected mesodorsad; epistomal lobe inconspicuous. Eye less elongate 

 than in californicus and hoferi, facets moderately coarse. Antennal 

 club 1.7 times as long as wide, somewhat compressed, first 2 sutures 

 transverse, third suture slightly arcuate and oblique. 



Pronotum 1.41 times as wide as long, widest at base; posterior out- 

 line bisinuate; posterior lateral angles not rounded, sides arcuate and 

 convergent, slightly constricted just behind the very broadly rounded 

 anterior margin; surface almost entirely concealed by scales but 

 shining where visible, median area punctate-granulate, lateral areas 

 with asperities smaller than in californicus and much smaller than 

 in hoferi^ replaced by granules near base; color markings similar to 

 those of its allies. 



Elytra wider than pronotum and 2.14 times as long, 1.38 times as 

 long as wide; bases arcuate and serrate, sides subparallel on anterior 

 half, then gradually narrowed, moderately rounded behind (more 

 broadly rounded than in hofen) ; dorsal contour nearly straight on 

 more than anterior half, declivity weakly arcuate; surface almost en- 

 tirely hidden by scales and hairs; striae impressed, narrow, nearly 

 concealed by scales from interspaces, punctures small and inconspicu- 

 ous; interspaces wide, nearly flat, finely granulate-punctate, asperities 

 much smaller than in californicus^ hoferi, etc., not notably larger on pos- 

 terior half; vestiture of scales and hairs, of which the former are much 

 more numerous; middle row of vestiture in each interspace on sides 

 and on anterior half of disk consisting of semierect hairs or slender 

 scales, middle rows on first 3 interspaces of the declivity of large, 

 erect scales, very broad on distal two-thirds ; color pattern formed of 

 yellow scales and hairs and brown scales and hairs similar in general 

 to that of its allies. 



Male. — Similar to female in habitus, frons not so deeply concave 

 and with a distinct transverse elevation (carina) between bases of 

 antennae, and extending dorsad from this an elevated median carina ; 

 surface not so finely punctured, with slightly sparser hairs ; pronotal 



