ii4 MEMOIRS ON THE COLEOPTERA 



half as wide as the elytra, the sides subevenly rounded from apex 

 to base, the basal angles abruptly feebly and minutely prominent, 

 the apical everted and prominently acute, the broadly arcuate base 

 broadly, feebly bisinuate medially; surface broadly, evenly convex, 

 becoming gradually broadly and strongly reflexed laterally, the 

 punctures small, sparse and nearly simple, becoming larger, stronger 

 and mingled with transverse plicse near the edge, which is feebly and 

 irregularly crenulate; elytra two-fifths to one-half longer than wide, 

 widest at the middle, the sides evenly arcuate, the humeri obliterated, 

 the oblique sides basally feebly sinuous to the base, which is not 

 dentate laterally; surface nearly smooth and punctureless, the costa 

 very strongly elevated, narrow and acute, the surface suturally 

 between them flat, exterior to them very steeply declivous, the inner 

 costa obsolete and barely at all traceable; abdomen finely, sparsely 

 punctate, slightly more closely so and more or less longitudinally and 

 closely plicate at the base of each segment; legs very long and slender, 

 shorter in the female. Length (cf , 9 ) 20.0-21.0 mm.; width 11.2- 

 12.0 mm. Arizona (Yuma) adversus n. sp. 



Form moderately ventricose (cf ) or very strongly so (9 ), grayish-black, 

 densely opaque throughout above, more or less shining beneath; 

 head very broadly, indefinitely impressed, with rather small, well 

 separated punctures, the hairs dark and minute; prothorax relatively 

 small, one-half wider than long, the apex slightly to decidedly nar- 

 rower than the base, moderately and circularly sinuate, the angles 

 not very acute, not everted; sides strongly rounded and subprominent 

 at the middle, converging becoming straight apically, equally con- 

 verging posteriorly, feebly arcuate and becoming sinuate very near 

 the basal angles, which are minutely acute and subprominent; 

 base transversely rectilinear; surface feebly convex, very finely, 

 rather sparsely punctate, the punctures slightly asperulate, the 

 sides broadly, very strongly reflexed and transversely, irregularly 

 and coarsely rugose, the edge thin and strongly, irregularly crenulate; 

 elytra evenly oval, widest at the middle, one-half (c? 1 ) to a third ( 9 ) 

 longer than wide, two-thirds wider than the prothorax in the former 

 to about twice as wide in the latter, the apical lobe moderate in 

 size, rather distinct; surface flat across the suture between the strongly 

 elevated, thin and acute medial costse, rapidly sloping thence to the 

 acute and crenulate side margins, the punctures very minute, re- 

 motely scattered and granuliferous; inner costa barely traceable; 

 abdomen asperulately and somewhat finely punctate; legs moder- 

 ately long, very slender, subsimilar in the sexes. Length (cf, 9) 

 16.0-20.0 mm.; width 8.4-12.0 mm. California (Upland, San 

 Bernardino Co.), Fuchs reflexus n. sp. 



3 Pronotum not at all granose but simply punctured. Body large, 

 suboblong, ventricose, dull in lustre, the elytra shining, deep black, 

 glabrous; head unimpressed, nearly flat above, finely, evenly and 

 rather sparsely punctured, each puncture with an extremely minute 

 hair; prothorax rather well developed, nearly a third wider than long, 

 widest before the middle but with the sides broadly rounded, mod- 



