Platynin.^; 121 



sternum finely, closely punctate in the concave lateral part; niet- 

 episterna nearly twice as long as wide. Length (9) 9.2-9.6 mm.; 

 width 3.75-3.8 mm. California (Sta. Cruz). Two examples, 

 taken by the writer vegetum n. sp. 



Form in the male relatively stouter and more ventricose than in the 

 male of fossigerum and deep black throughout, smaller in size and 

 with slightly shorter elytra, shining throughout, without trace of 

 aeneous lustre; head moderate, three-fifths as wide as the prothorax, 

 slightly elongate, with somewhat prominent eyes, the impressions 

 shallow, oblique posteriorly; antennae a little less than half as long 

 as the body in the male, the third joint just visibly longer than the 

 fourth; prothorax only a fifth or sixth wider than long, faintly 

 widest before the middle, the sides feebly arcuate, a little straighter 

 posteriorly, finely reflexed, gradually a little more so basally, the 

 angles broadly rounded; base scarcely wider than the feebly sinuate 

 apex, strongly and obliquely rounded at the sides; latero-basal 

 part not quite flat, finely punctate; foveae linear, very deep, not 

 anteriorly prolonged; elytra less than one-half longer than wide, 

 two-thirds wider than the prothorax, very feebly inflated behind 

 the middle, obtusely rounded at apex, with distinct sinus; strife 

 moderate, feebly impressed; intervals slightly convex, the third 

 with four to five punctures; anterior male tarsi very distinctly 

 dilated. Length (cf) 8.2 mm.; width 3.2 mm. Oregon (The 

 Dalles), — Wickham columbicum n. sp. 



Form shorter and stouter than in fossigerum and of smaller size, deep 

 black in both sexes, the elytra shining in female as well as male; 

 head somewhat as in the others of this section, but with the im- 

 pressions feeble, irregular and scarcely determinable; front feebly 

 rugulose laterally; antennae about half as long as the body in both 

 sexes; prothorax a fourth to third wider than long, widest at about 

 the middle, the parallel sides moderately and subevenly arcuate, 

 finely reflexed, gradually slightly more so basally, the angles obtuse 

 and rounded, sometimes very broadly rounded and obsolete; base 

 rounded and margined laterally, barely wider than the moderately 

 sinuate apex; impressions obsolete, the stria fine; foveae sublinear, 

 deeply and broadly impressed, traceable to the middle, the surface 

 thence to the sides rather conspicuously tumid; elytra about one- 

 half longer than wide, subinflated posteriorly, two-fifths wider than 

 the prothorax, rapidly obtusely rounded at apex, with long and 

 very feeble sinus; striae moderate, smooth, the intervals feebly 

 convex, nearly flat in the female, the third with five or six punc- 

 tures; anterior male tarsi moderately dilated, less widely than in 

 fossigerum. Length (cf 9) 8.0-9.0 mm.; width 3.2-3.75 mm. 

 California (Redwood Creek, Humboldt Co. and at Dunsmuir, 

 Siskiyou Co.). Five examples tumidulum n. sp. 



The synonymy given under harrisi seems to be correct, but 

 carho Lee, may be something different, especially peculiar in the 

 thoracic side margins, which are said to be extremely finely reflexed; 



