98 CASEY 



shining, feebly alutaceous throughout, glabrous; head rather 

 strongly, not very closely punctate, very obsoletely impressed at 

 the apical lobes, the anterior canthus fuller than in the preceding, 

 not quite as prominent as the posterior; prothorax one-half wider 

 than long, the sides broadly and moderately rounding and not 

 very converging anteriorly, subparallel thence to the base and 

 feebly arcuate, the apex much more broadly though moderately 

 sinuate in circular arc, neai'ly four-fifths as wide as the base, the 

 angles right and but slightly blunt; surface finely, sparsely punc- 

 tate, more coarsely but still rather sparsely laterally, the marginal 

 bead moderate; elytra similar though less obtuse and more ogival 

 at tip, the surface very feebly undulato-rugulose, with vague traces 

 of two or three elevated lines, remotely punctate, the punctures 

 rather coarse for the present group and closer and still stronger 

 laterally; prosternum finely, rather sparsely punctate, the process 

 margined about its entire contour by a distinct groove and unusu- 

 ally fine but distinct bead ; femora and abdomen nearly as in the 

 preceding species. Length 13.2 mm.; width 5.4 mm. Mokel- 

 umne Hill, Calaveras Co blaisdelli n. sp. 



Prothorax with the sides rounded and converging anteriorly, becoming 

 straight or nearly so and parallel or subparallel thence to the 

 base 4 



Prothorax with the sides converging from base to apex ; marginal bead 

 of the prosternal process rather fine but strong, generally entire.. 1 1 



4 — Marginal groove and beading of the prosternal process strong 



and distinct 5 



Marginal groove and beading very feeble, sometimes observable with 

 difficu Ity 8 



5 — Sides of the prothorax very gradually more rounding anteriorly, 



not at a 1 1 subangulate 6 



Sides more or less abruptly rounded or subangulate at or before the 

 middle 7 



6 — Prothorax more transverse, about one-half wider than long. Body 



elongate, moderately convex, rather shining, with short sparse 

 pubescence, especially distinct on the elytra ; head rather coarsely, 

 not densely punctate, the lobes scarcely impressed, the transverse 

 suture unusually broadly impressed, the anterior canthus broadly 

 rounded, much less prominent than the posterior ; prothorax rather 

 strongly narrowed anteriorly, the sides parallel and nearly straight 

 in basal half, the apex moderately sinuate, but little more than 

 three-fifths as wide as the base, the angles obtuse and blunt ; sur- 

 face very minutely, remotely punctate, somewhat strongly but 

 sparsely so laterally, the marginal bead fine; scutellum moderate; 

 elytra nearly as in blaisdelli but more rounded and less angulate 

 at apex, the surface almost smooth, much more finely and very 

 remotely punctate, more strongly but still finely and sparsely so 

 laterally, the edge very finely reflexed ; prosternum finely, sparsely 

 punctate, the process very minutely; abdomen and hind femora 



