140 CASEY 



the elytra shining, with very minute setae within the punctures ; 

 head finely, deeply and closely punctate, the sinus moderately 

 narrow, deep, angulate, the lobes not broadly rounded, unim- 

 pressed, the anterior canthus obliquely rounded, sensibly more 

 prominent than the posterior; prothorax three-fourths wider than 

 long, the sides strongly and almost evenly rounded, strongly con- 

 verging apically, becoming parallel basally, the apex rather shal- 

 lowly sinuate, fully three-fifths as wide as the base, the angles de- 

 flexed and obtuse but rather narrowly rounded, the base feebly sin- 

 uate laterally ; surface somewhat finely and sparsely though very 

 strongly punctate, becoming coarsely but loosely so laterally, the 

 bead rather fine, slightly curving at base ; scutellum small ; elytra 

 barely two-fifths longer than wide, toward base narrower than the 

 prothorax, the sides parallel and rounded, becoming more con- 

 verging but rounded posteriorly to the ogival apex ; surface slightly 

 uneven, rugose posteriorly, strongly, rather sparsely punctate; 

 prosternum medially finely but strongly, not densely punctate, 

 opaque anteriorly, the process rather narrow, moderately con- 

 stricted, the broad flat lateral margin differing from anything else 

 observed in the genus ; hind femora and abdomen finely, sparsely 

 punctate. Length 9. 25 mm. ; width 4. 75 mm. Colorado (Boulder 

 Co.) corvina n. sp. 



Form oval, rather abbreviated, posteriorly subacute, black, shining; 

 prothorax shorter than wide, less finely punctate than in affinis, 

 the anterior angles- strongly deflexed, the sides very finely mar- 

 gined, the posterior angles produced, acute ; elytra densely, 

 rugosely punctate. Length 10.25 mm. ; width 5.5 mm. Oregon. 



ovalis Lee. 



The species described by LeConte under the name ovalis, was 

 probably collected at some point in the Willamette Valley, and 

 will prove to be different from any at present represented before 

 me ; the original description is given above. 



Subgenus Crypticomorpha nov. 



Form elongate-oval, rather depressed, piceous, the under surface, legs 

 and antennae more or less pale and rufescent ; integuments rather 

 shining, clothed thinly with fine decumbent pubescence ; head 

 moderate, rather finely, not densely punctate, the sinus moderate 

 in width, broadly rounded, the lobes obtuse but not very broadly 

 rounded, the oblique sides arcuate, less prominent than the unusu- 

 ally convex and subentire eyes ; antennae long, very slender ; pro- 

 thorax nearly three-fifths wider than long, somewhat wider behind 

 the middle than at base, the sides subevenly and rather strongly 

 arcuate, converging anteriorly, becoming parallel basally, the apex 

 moderately and evenly sinuate, three-fifths as wide as the base, 



