178 



Say^s Descriptions of new 



t 



at each end of the emargination. The latter species is 

 hairy. 



1 



PSAMMODIUS; GylL 



?• interru^tus. Thorax with three lateral^ transverse 

 undulations. 



Inhabits Indiana. 



Body dark chestnut, punctured : head deeply and some- 

 what acutely emarglnated ; with very numerous raised 

 points : thorax with about three, lateral^ transverse^ but 

 little impressed grooves, obsolete above ; with a dorsal, 

 longitudinal, impressed line, obsolete before ; edge cili- 

 ated ; surface somewhat rough : elytra grooved, and some- 

 what punctured. 



Length three twentieths of an inch. 



In the sulcicoUiSy 111., the thoracic grooves are not in- 

 ^ terrupted on the back ; it is also smaller than the present 

 species. ^ 



Odont^us, Meof. 

 O. miisculus. Small, brown, with short hairs ; elytra 



with punctured striae. 



Inhabits Indiana. 

 Body small, light chestnut brown, darker before, with 

 very numerous short hairs, punctured : head^ between the 

 eyes, with a hardly elevated, arcuated line, above which 

 is a transverse indentation, then a hardly perceptible rais- 

 ed line : labrum emarginate ; mandibles concave above, 

 convex heneath, regularly arcuated, exterior edge entire ; 

 clypens not trilobate at tip, entire : antemm yellowish at 

 tip : thorax convex, laterally a little dilated towards the 

 base ; an indentation on the middle of the lateral sub- 

 margin: e/i/^ra with somewhat impressed and punctured 



