Platynin.^ 39 



the antennae blackish basally; head elongate, rhomboidal, four- 

 fifths as wide as the prothorax, with moderate though very promi- 

 nent eyes, the anterior impressions rather narrow and deep; an- 

 tennae long and slender; prothorax small, barely a sixth wider than 

 long, widest before the middle as usual, the sides evenly rounded, 

 oblique posteriorly, becoming distinctly sinuate near the angles, 

 which are broadly obtuse though unusually sharply defined at tip, 

 but not prominent; base arcuate; apex sinuate, with narrowly 

 rounded angles; surface with very fine and close-set transverse 

 strigilation medially, the anterior impression lineate and somewhat 

 deep; foveae moderate, rather deep and finely punctate; elytra 

 barely one-half longer than wide, about twice as wide as the pro- 

 thorax, widest at the middle, with evenly arcuate sides, gradually 

 ogival apically, the sinus long and very feeble; tips narrowly round- 

 ed; striae fine, nearly smooth, moderately impressed, becoming 

 finer, unimpressed and slightly comminuted laterally; intervals 

 feebly convex; three punctures rather coarse; tarsi long and very 

 slender, the anterior shorter and but feebly dilated in the male; 

 met-episterna only moderately elongate. Length (cf) 7-5 nim. ; 

 width 2.7 mm. North Carolina (Pigeon River Retreat), — Hubbard. 

 One example received from Mr. Beutenmiiller. . . trif oveolatus Beut. 



Elytra parallel or oblong-suboval, the side margins more finely reflexed 

 than those of the prothorax 20 



20 — Elytra more elongate, parallel and subdepressed, rounding only at 

 apex. Black, the legs rufo-piceous or paler, the reflexed side margins 

 diaphanously pale; surface polished in both sexes; head barely 

 longer than wide, with rapidly narrowed neck and large and very 

 prominent eyes, four-fifths as wide as the prothorax, the anterior 

 impressions moderate; antennae very slender, testaceous, fully half 

 as long as the body; prothorax nearly a fourth wider than long, the 

 sides evenly rounded and broadly reflexed, becoming oblique but 

 not sinuate posteriorly to the angles, which are broadly obtuse 

 though with the tips minutely subprominent; base strongly arcuate 

 at the sides, as wide as the apex, which is sinuate, with rounded 

 angles; surface with some fine faint transverse rugulse, the anterior 

 impression alone distinct; foveae large, deeply concave, smooth, 

 formed externally by the strongly reflexed edge and gradually 

 evanescent at about the middle; elytra three-fifths longer than wide, 

 about twice as wide as the prothorax, the apex ogivally rounding 

 in apical third, the sinus not very long, feeble though evident; sides 

 nearly straight; fine basal line forming a broadly rounded curve 

 with the side margin; surface with a feeble flattening at striae 5-8 

 near apical fourth; striae rather fine, nearly smooth, the intervals 

 nearly flat; met-episterna notably long; anterior male tarsi only 

 feebly dilated. Length (cf 9 ) lo.o-ii.o mm.; width 3.7-4.0 mm. 

 North Carolina to Alabama (Mobile). Indiana, — Blatchley. [An. 



corvinus Dej.; marginalis Hald.] cincticoUis Say 



A — Similar to cincticoUis but a little smaller in size, with the prothorax 

 less transverse; general coloration of the body paler, rufo-piceous; 

 anterior male tarsi very slightly less slender. Length (cf 9 ) 



