Platynin.e 65 



fully half as long as the body, the third joint barely visibly shorter 

 than the fourth; prothorax widest before the middle, with rounded 

 and finely reflexed sides, becoming straight posteriorly to the obtuse 

 and feebly marked angles; base broadly arcuate, as wide as the 

 very feebly sinuate apex; angulate anterior impression evident, 

 the stria fine; surface with feeble transverse rugulse, otherwise 

 smooth, the foveae small, narrow, short and linear, only moderately 

 impressed; elytra oblong-suboval, parallel, with feebly arcuate 

 sides, rapidly rounding at base, three-fifths longer than wide and 

 twice as wide as the prothorax, rather rapidly obtuse at apex, the 

 sinus rather short, evident; striae extremely fine, not deep, obsoles- 

 cent at the sides; intervals flat; legs very slender, the anterior male 

 tarsi long and feebly dilated. Length (cf 9) 6.5-6.8 mm.; width 

 2.35 mm. California (San Joaquin Co.) ferruginosus Dej. 



Prothorax transverse, distinctly more than half as wide as the elytra; 

 dorsal punctures of the latter rather strong and five or six in number. 

 Body narrow, moderately convex, pale piceous-brown in color and 

 shining, the head blackish; under surface black, the epipleura and 

 legs pale brownish-flavate; head not longer than wide, nearly five- 

 sixths as wide as the prothorax, the eyes very prominent; impres- 

 sions oblique behind; antennae fuscous, with paler first joint, evi- 

 dently more than half as long as the body, the third and fourth 

 joints subequal; prothorax a fourth wider than long, widest before 

 the middle but with the sides very moderately arcuate and finely 

 reflexed, becoming slightly oblique and straight posteriorly, the 

 angles very obtuse, with the tips rather distinctly defined though 

 slightly blunt; base as wide as the feebly sinuate apex, obliquely 

 rounded at the sides; transverse impressions both distinct, the 

 anterior deep; stria fine, somewhat impressed; foveae feebly concave, 

 nearly smooth, with a deeper and rounded more basal part; elytra 

 nearly three-fifths longer than wide, about two-thirds wider than 

 the prothorax, the sides rapidly rounding at base; apex gradually 

 rounded, with very feeble sinus; striae fine, somewhat disintegrated 

 laterally; intervals feebly convex suturad, flat laterad, the third 

 with five or six very distinct punctures; anterior male tarsi rather 

 long, narrowly dilated. Length (cf) 5.8 mm.; width 2.0 mm. 

 Colorado (Ouray), — Wickham marcidus n. sp. 



Prothorax similarly transverse and more than half as wide as the elytra, 

 the latter however with the dorsal punctures very fine and about 

 four in number 15 



15 — Upper surface very slightly more depressed than in ferruginosus, 

 pale piceo-ferruginous throughout above, the legs paler; head only 

 slightly elongate, four-fifths as wide as the prothorax, the eyes 

 moderately large, prominent, anterior impressions short, feeble; 

 antennae not very slender, half as long as the body, fuscous, paler 

 basally, the medial joints less than three times as long as wide, the 

 third fully as long as the fourth; palpi pale, the last joint slightly 

 longer than the third, feebly and evenly inflated, gradually pointed 

 apically; prothorax two-fifths wider than long, the moderately 

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



