84 CASEY 



5 Sides of the prothorax almost evenly converging and evenly, very 



distinctly arcuate from base to apex, the latter rather narrowly, 

 deeply and circularly emarginate, three-fifths as wide as the base, 

 with the angles unusually broadly rounded. Body smaller and less 

 dilated than in abdominalis, similarly deep black, alutaceous, the 

 elytra less strongly so ; head similar though finely and sparsely 

 punctate; prothorax very minutely, sparsely punctate, still rather 

 finely and sparsely but more distinctly toward the sides, the mar- 

 gin moderately elevated ; elytra similar though rather more pointed 

 behind, the surface moderately rugose, strongly so near the tip, 

 the sides similarly reflexed, the punctures sparse, less coarse or 

 deep but distinct; prosternum closely and strongly punctured, 

 more finely and sparsely anteriorly, the abdomen distinctly but 

 not very coarsely punctate and with only traces of rugosity even 

 medially throughout the length. Length 13.8 mm. ; width 7.0 

 mm. Los Angeles Co tristis n. sp. 



Sides of the prothorax parallel and straight or very nearly so, converg- 

 ing and rounded anteriorly, the apical angles not rounded though 

 slightly blunt 6 



6 Form broad, nearly as in abdominalis, deep black, rather shining, 



the head and pronotum barely at all alutaceous, the former rather 

 strongly and closely punctured, not evidently impressed at the 

 apical lobes, the anterior and posterior canthi subequally promi- 

 nent; prothorax fully one-half wider than long, the sides parallel 

 and straight, becoming more abruptly converging and broadly 

 arcuate only well before the middle, the apex nearly three-fourths 

 as wide as the base, broadly and circularly emarginate, the angles 

 right and with thickened bead, the surface very minutely, sparsely 

 punctate, with a feebly defined impunctate line medially, the 

 punctures becoming rather coarse and closer laterally, the margin 

 narrowly explanate medially, with the bead strongly elevated; 

 elytra as in the preceding species but with the individual apices 

 rounded, more narrowly reflexed at the sides than in abdominalis, 

 the punctures only moderate and sparse, each with an extremely 

 minute silvery seta, the surface slightly rugose, strongly so at tip; 

 prosternum not coarsely and decidedly sparsely punctate through- 

 out, the abdomen with the punctures sparse, strong only medially, 

 strongly rugose only near the basal process; tarsi stout. Length 

 i6.omm.; width 8.1 mm. Sta. Barbara strenua n. sp. 



Form distinctly less broad, the single female being evidently a little 

 more than twice as long as wide, deep black, rather shining, the 

 anterior parts but feebly alutaceous; head rather sparsely, not 

 very coarsely but strongly punctate, deeply impressed behind 

 each apical lobe and with the margins before the eyes somewhat 

 deplanate, as prominent as the hind canthus; prothorax barely 

 one-half wider than long, the sides evenly and gradually more 

 arcuate and converging anteriorly, becoming parallel and straight 

 only in about basal half, the apex narrower, scarcely more than 



