:274 APPENDIX. 



somewhat dilated line, extending from near the base of 

 the antennae to the middle ; thorax punctured, with short 

 hairs, and slightly tinged with piceous ; anterior angles 

 very much decurved and acute ; posterior angles hardly 

 acute; posterior margin lobed at the scutel; scutel small, 

 rounded ; elytra punctured and with short hair ; exterior 

 submargin with three impressed striae; dewea/^ punctured, 

 hairy ^feet dull piceous. 



Length one-tenth of an inch. 



The form of the penultimate joint of the antennae dif- 

 fers considerably from that of tlie dresdensis in being much 

 less dilated on the inner side, the seventh joint has the in- 

 ner process more slender and the terminal joint is a little 

 arcuated. 



NOSODENDRON, Latr. 



N. unicolor. Black, immaculate, antennae piceous, cla- 

 vum yellowish. 



Inhabits Missouri. 



Head with dense, dilated, shallow punctures ; thorax 

 short, length less than half the breadth ; punctures less 

 dense than those of the head : posterior edge regularly ar- 

 cuated ; lateral edge hardly arcuated, nearly rectilinear ; 

 angles acute ; elytra irregularly punctured ; humerus a lit- 

 tle elevated ; humeral angles subacute ; beneath and feet 

 punctured ; anterior tibia widely and deeply emarginated 

 on the exterior edge near the tip and serrated ; intermedi- 

 ate tibia with four or five serratures on the outer edge, and 

 a prominent tooth near the tip •, posterior teeth with about 

 five small subspinous teeth, and a robust tooth near the tip. 



Length one-fifth of an inch. 



