Platynin.e 63 



more abruptly formed, scarcely more than straight; striae very 

 fine, irregularly subcomminuted or broken; intervals flat, the third 

 with five very small punctures; anterior male tarsi rather distinctly 

 dilated. Length (cf) 5.5 mm.; width 2.0 mm. Idaho (Coeur 



d'Alene), — Wickham ineptus n. sp. 



Legs pale ferruginous; body never deep black 13 



13 — Body with some greenish-metallic lustre anteriorly, not distinct 

 however on the elytra. Dark piceous, the head black; pronotal 

 margins diaphanously pale, the elytra less dark than the pro- 

 notum; under surface piceous, the legs and epipleura testaceous; 

 surface polished; head rhomboidal, with moderate but very promi- 

 nent eyes, three-fourths as wide as the prothorax; anterior im- 

 pressions small, short and feeble; antennae slender, fusco-testaceous, 

 clearer basally, three-fifths as long as the body; prothorax more than 

 a fourth wider than long, the sides broadly arcuate, straighter 

 basally, less finely reflexed than usual in this section, gradually a 

 little more widely basally, the angles broadly obtuse, with the tips 

 obtusely subprominent; base arcuate laterally, as wide as the very 

 feebly sinuate apex, the apical angles finely blunt; anterior im- 

 pression deep, angulate, forming the anterior limit of the fine stria; 

 foveae smooth, broadly impressed, obliquely obsolescent anteriorly, 

 having a deeper lineate part basally; elytra one-half longer than 

 wide, four-fifths wider than the prothorax, subevenly rounding 

 behind, with feeble sinus; striae fine and not quite smooth, feebly 

 impressed, not more so apically; intervals feebly convex, the third 

 with five small punctures; anterior male tarsi only feebly dilated, 

 the posterior very slender, with fine and feeble lateral sulcus. 

 Length (cf) 6.3-7.0 mm.; width 2.3-2.45 mm. Lake Superior 



(Bayfield, Wise), — Wickham tritus n. sp. 



A — Almost similar to tritus but with feebler evidence of metallic lustre 

 anteriorly, the head and antennae nearly similar; prothorax not 

 so transverse, barely a fourth wider than long, otherwise nearly 

 similar, except that there are more of the very feeble transverse 

 rugulse, these being especially more evident in the foveae; elytra 

 nearly as in tritus, the striae still somewhat finer; anterior male 

 tarsi narrowly but evidently dilated. Length (cf) 5-75 mm.; 



width 2.35 mm. Utah (Provo), — Wickham fractus n. subsp. 



Body with some very faint and obscure greenish lustre on the head and 

 prothorax, wholly wanting on the elytra. Color in great part pale, 

 the head blackish, the pronotum not quite so dark, with pallid 

 margins throughout the contour, very fine at apex and base, the 

 elytra pale and uniform yellowish-brown; under surface very pale 

 piceous, not at all metallic, the legs brownish-flavate; head dis- 

 tinctly elongate, narrower than the prothorax, with moderately 

 convex, scarcely prominent eyes; antennae slender, uniformly 

 rufous, the mandibles rufous; prothorax small, nearly a third wider 

 than long, the anteriorly parallel sides moderately arcuate, becoming 

 rather strongly oblique behind the middle and slightly sinuate near 

 the basal angles, which are obtuse, with blunt tips; base obliquely 

 rounded at the sides, evidently narrower than the moderately 



