464 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



EMBAPHION PLANUM Horn. 

 Embuphion pJanuin Horn. Trans. Amer. Phil. Soc. Phila.. XIV, 1870, p. 321. 



Oblong-oval. about tAvice as long as wide; margins of body not 

 foliaceoiis, acute elytral margins not attaining the apex; surface more 

 or less dull. 



Head moderate, about twice as wide as long, quite plane betw^een 

 the eves, feebly impressed laterally; sides of the frons slightly promi- 

 nent, finely, rather sparsely punctate, each puncture with a minute 

 curved seta, frontal suture at times distinct, sometimes slightly 

 impressed. Antenncp quite long; outer four joints scarcely com- 

 pressed or Avidened; third joint about equal to the next two taken 

 together; fourth to the seventh, inclusive, subequal; eighth triangu- 

 lar; ninth and tenth suborbicular ; eleventh ovate. 



Pronotum one-sixth to one-half wider than long and slightly nar- 

 rowed behind; margin acute, not foliaceous nor suddenly formed; 

 disc feebl}^ convex, finely and rather sparsely punctate, punctures 

 becoming slightly denser laterally, each with a small curved .seta ; 

 «/>e^c evenly but not deeply emarginate, the emargination four or five 

 times wider than deep, usually very finely margined; sides evenly 

 and moderately arcuate from base to apex; margin slightly explanate, 

 widening a little posteriorly, feebly reflexed; hase distinctly shorter 

 than apex, transverse, and obsoletely margined ; apical angles obtusely 

 rounded, attaining the eyes; basal angles obtuse, rounded, and pro- 

 jecting slightly beyond the middle of the base. 



Propleurai smooth, impunctate, and obsoletely rugulose, defined 

 from the inferior surface of the pronotal margin by a shallow groove. 



Elytra elongate oval, base at middle slightly prolonged and feebly 

 sinuate laterally; hnnieral angles distinct and rounded; margin acute, 

 feebly reflexed and not attaht'nig flic apex; sides evenly arcuate, grad- 

 ually converging apically ; apex acute and not caudate ; disr flattened, 

 at times feebly convex, 7iever concave^ evenly and rather gradually 

 arcuately declivous posteriorly; acutely inflexed laterally, the inflexed 

 sides feebly convex; surface sculptured with subasperate punctures, 

 that may l)e serially arranged or irregular and somewhat denser 

 laterally; the inflexed sides are irregularly and rather sparsely punc- 

 tate. Each puncture bears a short curved seta. 



Epipleima narrow and not dilated at base, gradually nai-rowing to 

 apex; superior margin distinctly defined; surface glabi'ous and im- 

 punctate. 



Sterna more or less feebly punctate and rugidose, feebly shining. 



Parapleural (juite glabrous, feebly and obsoletely punctate. 



Ahdomcn horizontal, more or less shining, sparselj^ or not veiy 

 densely pimctidate, obsoletely rugulose. 



Legs moderate and rather slender, anterior femora mutic, tibial 

 spurs similar and the protarsi simple in the sexes. 



