ORDER COLEOPTERA. 547 



small, convex-inclined, and not elevated at the sides. It 

 forms the genus 



Elenophorus of Megerle and Dejean. 



The antennas are a little larger than in those of Akis ; the 

 eyes are more narrow and emarginated. 



The last pimelias of the division of those whose mentum is 

 emarginated, are distinguished from the foregoing by the 

 manner in which the mentum terminates ; instead of being 

 round, and divided into two festoons, it is slightly emargi- 

 nated or concave, with the lateral angles sharp, and in pro- 

 portion shorter and more narrowed at the base, or more heart- 

 shaped ; it covers the jaws. The eleventh articulation of the 

 antennee is not apparent ; the tenth, a little larger than the 

 preceding, and in form of a top, truncated obliquely at the 

 end, terminates them. As to the form of the head, of its 

 anterior emargination, and often also as to the cut of the 

 corslet, these insects are much assimilated to Akis, properly 

 so called. 



EuRYCHORA, Thunb. 



Have the body oval, with the edges sharp and ciliated ; the 

 corslet semicircular, and receiving the head into an anterior 

 emargination ; the abdomen nearly heart-formed, and the 

 antennae composed of linear articulations compressed or an- 

 gular, and the third of which is the largest.* 



Adelostoma, Dup. 



Have the body narrow and elongated, with the corslet nearly 

 square, a little narrowed behind ; the abdomen is a long 

 square, rounded behind ; the antennas thick, almost perfo- 

 liated, with the articulations, except the last, nearly all len- 



* Lat. Genex-. Crust, et Insect. II. 150. Schoenh. I. 



2 N 2 



