Platynin.e 49 



sixth or seventh wider than long, the oblique sides posteriorly be- 

 coming straight or broadly, almost imperceptibly sinuate to the 

 basal angles, which are more than right but very sharp at tip; 

 margins finely reflexed, a little more so basally; transverse rugulae 

 fine but evident; anterior impression feeble; fovese large, rugulose, 

 at some distance from the sides, obliquely attenuate anteriorly, 

 disappearing at the middle; base and apex subequal, the latter 

 deeply sinuate; elytra nearly one-half longer than wide and almost 

 twice as wide as the prothorax, the broadly arcuate sides more 

 rounded at base; apex gradually obtuse, the sinus evident but very 

 shallow; striae fine, with almost invisible micro-punctulation, a 

 little less fine and smoother in the male; intervals flat (9 ), feebly 

 convex (cf); tarsi slender, the anterior moderately dilated in the 

 male. Length (cf 9) 7.3-8.6 mm.; width 2.8-3.25 mm. Cali- 

 fornia (Humboldt to Sta. Clara). Abundant. Twelve specimens. 



micans Menet. 



Body much larger than in micans, though somewhat similar in general 

 outline, the thoracic sides less rounded, the head larger and the 

 elytra duller in the female, deep black, the anterior parts shining; 

 head elongate, with prominent eyes, fully four-fifths as wide as the 

 prothorax; antennae slender, the third joint distinctly longer than 

 the fourth; prothorax about as long as wide, parallel, the sides very 

 moderately and broadly, subevenly rounded, becoming gradually 

 just visibly sinuate posteriorly, finely reflexed, a little more so at 

 base, the angles right and sharp but not prominent; base as wide 

 as the rather feebly sinuate apex; transverse rugulae distinct, the 

 stria fine but well impressed, subentire; foveae rugose, concave, 

 gradually disappearing at the middle of the length; elytra fully one- 

 half longer than wide, not quite twice as wide as the prothorax, 

 gradually obtusely ogival behind, with rapidly rounded humeri, 

 the sinus long, barely visible; striae fine, shallow, closely micro- 

 punctulate; intervals perfectly flat in the female; tarsal joints 

 strongly, longitudinally furrowed and strigilate above and at the 

 sides, slender. Length (9) 9.5 mm.; width 3.6 mm. California 

 (Sta. Rosa) and Oregon (Medford), — •Wickham.. . .concurrens n. sp. 



Body much stouter than in micans, more abbreviated than in that or 

 concurrens, with much larger head than in the latter, black, the 

 elytra somewhat piceous; under surface and legs in part piceo- 

 rufous; head elongate, not quite four-fifths as wide as the pro- 

 thorax, with large and rather prominent eyes, the slender black 

 palpi with the extreme tip pallescent; antennae slender, black, 

 nearly half as long as the body, the third joint very distinctly longer 

 than the fourth; prothorax not quite as long as wide, the sides 

 strongly, subevenly inflated and rounded, oblique and straight 

 posteriorly to the angles, which are more than right but with the 

 tips minutely and very acutely prominent; surface shining like the 

 head, the transverse strigillae conspicuous; stria fine; foveae rugose, 

 concave, obsolescent rather before the middle; base somewhat 

 wider than the distinctly sinuate apex, beaded only at the sides, 

 T. L. Casey, Mem. Col. IX, Jan. 1920. 



