358 MEMOIRS ON THE COLEOPTERA 



lustre and sculpture, the elytra with similar small lateral and larger 

 basal tomentose areas and the erect hairs sparse and rather short; 

 head differing in being more flattened above, this surface feebly 

 tumid along the middle and broadly, just visibly impressed at each 

 side, the punctures smaller, deeper and, though confusedly dense, 

 more discrete than in angularis; anterior slope rather abrupt, its 

 upper limit evident, though not at all sharply marked, the clypeus 

 strongly reflexed and broadly, deeply sinuate anteriorly; prothorax 

 narrower, only two-fifths wider than long, parallel, evenly and 

 strongly arcuate at the sides, widest at the middle, rather more 

 convex than in angularis, feebly impressed along the middle, the 

 punctures nearly similar, but not so coarse and rather deeper, the 

 angles nearly similar; scutellum with large areolae, almost smooth 

 apically; elytra nearly as in angularis but narrower; pygidium evenly 

 and strongly convex, with the usual coarse and very shallow areolae; 

 hind tarsi but little more than half as long as the tibiae, extremely 

 compressed and tapering on the flat side, which, on the second joint, 

 is twice as wide as thick. Length 11.3-1 1.7 mm.; width 5.2-5.6 mm. 

 California (Kaweah), Hopping. Two examples. 



compressipes n. sp. 



19 Legs rufous, rather long, posterior spiracles more conspicuously 

 prominent than in any other species. Body elongate, subrhombiform, 

 strongly depressed, black, moderately shining above, more so beneath, 

 the sparse erect hairs rather long but less so than in armatus, pugetanus 

 or crinitus and much less conspicuous; head obscure rufous an- 

 teriorly, opaculate, the punctures small and well separated; upper 

 surface nearly flat, distinctly impressed at each side over the an- 

 tenna?, the steep anterior slope rather abruptly defined in a trans- 

 versely arcuate line, which is broadly, feebly tumid; clypeus rather 

 wider than the head as in crinitus, very strongly reflexed; prothorax 

 fully one-half wider than long, rather depressed, feebly impressed 

 along the median line, slightly widest just behind the middle, the 

 sides feebly arcuate; foveolae rather coarse and deep but widely 

 separated; scutellum with numerous moderate, very shallow areolae; 

 elytra very flat, distinctly cuneiform, a third to two-fifths wider than 

 the prothorax and nearly three-fifths longer than wide; disk with 

 broad and feebly impressed longitudinal lines as in knochi, the areolae 

 numerous, large, very elongate-oval, closed behind, not impressed 

 and densely opaque, the flanks abruptly descending but with the 

 upper line not tumid, deeply punctured, having each a small spot of 

 tomentum behind the middle; pygidium with coarse impressed fo- 

 veolae; two anterior tibial teeth well developed; hind tarsi rather slen- 

 der, not tapering, moderately compressed and four-fifths as long as the 

 tibiae; under surface with well separated coarse foveolae throughout, 

 less coarse on the abdomen as usual. Length 10.8-13.3 mm.; 

 width 4.8-5.9 mm. Arizona (Santa Rita and Huachuca Mts.). 



mexicanus Schaum 



Legs black; posterior spiracles moderately prominent 20 



20 Clypeus rather conspicuously expanded but obtuse laterally and 

 somewhat wider than the head across the eyes, nearly as in mexicanus. 



