98 MEMOIRS ON THE COLEOPTERA 



almost a third wider than long, the base rather strongly sinuate 

 medially, two-thirds the maximum width, the impressions as in 

 the preceding, the angles very obtuse and rather broadly rounded; 

 elytra unusually short and very feebly convex, oblong, parallel, with 

 broadly arcuate sides and very broadly obtuse apex, fully a fourth 

 wider than the prothorax and scarcely one-half longer than wide, 

 the striae very fine, scarcely at all impressed, except feebly at the 

 sides, very finely and remotely punctulate, the intervals flat; hind 

 tarsi as in the preceding, rather stout. Length (cf) 27.0 mm.; 

 width 9.8 mm. A single example marked "California" in the Levette 

 collection cephalus n. sp. 



Mandibles bent inward much less obliquely at apex, the external angle 

 broadly rounded, their upper surface without evident long smooth 

 folds; hind tarsi of the usual stoutness but shorter than in either 

 of the preceding, the first joint barely two and one-half times as 

 long as wide; body similar in color, lustre and in feeble convexity 

 to the preceding; head a little less developed, only a little more than 

 two-thirds as wide as the prothorax, otherwise nearly as in cephalus 

 throughout; prothorax scarcely a fourth wider than long, a little 

 more transverse in the female, the base and impressions nearly 

 similar, the angles obtuse and only slightly blunt (cf ) but rounded 

 (9), the sides before them only feebly sinuate; elytra parallel, 

 with feebly arcuate sides and very obtuse apex, a fourth wider than 

 the prothorax and nearly three-fifths longer than wide, slightly 

 shorter in the female, the striae less fine and rather more distinctly 

 and usually more closely punctate, the intervals flat. Length (cf ) 

 26.0, (9) 24.5 mm.; width (cf) 9.2, (9) 9-5 mm. Two examples 

 without locality label domitor n. sp. 



6 Form narrower and more elongate, rather more convex than any of 

 the preceding species except vanconveri, deep black and shining, 

 the elytra not dull in either sex; head large, four-fifths (cf ) to three- 

 fourths ( 9 ) as wide as the prothorax, the sides behind the eyes more 

 swollen and longer than in any of the preceding, the impressions and 

 antennae nearly similar, the epistoma slightly more impresso- 

 sinuate, but with the lower margin only feebly sinuate, the labrum 

 similarly sinuate medially, the mandibles smooth, not abruptly 

 inflexed apically; prothorax similar in form to the preceding, the 

 impressions almost similar; elytra about a sixth (cf) to nearly a 

 fourth ( 9 ) wider than the prothorax, three-fourths to three-fifths 

 longer than wide respectively, moderately convex, the striae fine, 

 feebly impressed, more deeply so laterally and with the punctures 

 so fine as to be obsolescent, the intervals feebly convex, rather 

 strongly so laterally and apically; hind tarsi stout, gradually feebly 

 tapering, nearly four-fifths as long as the tibiae, 'the joints slender at 

 base, abruptly and very strongly swollen in their apical halves, with 

 a constriction just before the expansion, the basal joint relatively 

 much shorter than in any of the preceding, the first four joints very 

 gradually and uniformly diminishing in length; male larger and 

 stouter than the female and with more developed head. Length 



