332 



REVISION OF THE TENE1J1UONID/E OF AMERICA, 



Epipleurffl not attaining the tip of elytra, 



Intercoxal process of abdomen broad, quadrangular, truncate. 

 Intercoxal process oval or acute, narrow. 

 Eyes feebly emarginate (broad at middle). 

 Femora strongly clavate. 



Mentum prominent at middle. 

 Mentum emarginate in front. 

 Femora slender. 



Hind tarsi long. 

 Hind tarsi short. 

 Eyes deeply emarginate (narrow at middle;). 



Mentum trilobcd, middle lobe prominent and truncate. 

 Mentum flat, rounded in front. 

 Antenna* slender, longer than head and thorax, outer joints triangular, 

 last joint oval, more or less acute. 

 Epipleurse attaining tip of elytra, 

 Epipleurse not attaining tin; tip of elytra. 

 Anterior tarsi of male not dilated. 

 Anterior tarsi of male feebly dilated. 

 Anterior margin of front reflcxed. 

 Anterior margin of front not reflexed. 



COELOCNEMIS. 



MKKINUS. 

 PACHYUEGUS, 



CJPIS. 

 HAPLANDRUS. 



SCOTOB.ENUS. 

 CIBDELIS. 



GLYPTOTUS. 



RHINANDRUS. 



CENTRONOPUS. 

 XYLOPINUS. 



POLYPLETTRTTS, Each. 

 Polypteunas, Esoh., ZooX Atl. IV, p. 11. 

 Tlic species of this genus are but three in number, and may be easily distinguished. 



I', gjeminatus, Sol., Ann. Soe. Entom, France VII, p. L&6; pi. 8, Bg. 14. 



Black and opaque. Elytra vvitli double rows of large deep punctures, the interstices 

 between the double rows not elevated. The hind angles of the prothorax are rectangular 

 and the base feebly sinuate. 



Length .42-.50 inch. 



Occurs in the southeastern Atlantic States. 



P. perforatum, Germar, (Upis) I". Spec. Nov., p. 148. 



Black and opaque. The elytra are sculptured as in the preceding, the perforations 

 being rather deeper and the interpaces more distinctly costiform. The thorax is more 

 strongly sinuate behind and the angles more acute. The sides of the thorax are also 

 more rounded. 



Length .42-.S2 inch. 



Occurs in the Gulf States. 



