OBSERVATIONS. 



The present group was separated from Cy- 

 CHiius, by Count Dejean, who remarks, that at 

 first view, they resemble some small species of 

 Carabus, and particularly the convexus; that in 

 comparison with the true species of the genus 

 Cychrus, the head is a little less elongated, the 

 antennae a little shorter, and the thorax, instead 

 of being cordate, is rounded, oval or orbicular, 

 convex, not elevated on the sides, nor behind; 

 the first and second joints of the anterior tarsi 

 in the male, are much dilated, the first, truncate- 

 triangular; the second, quadrate broader than 

 long; the third is less dilated, cordate. 



The word Sph^roderus, is derived from the 

 Greek words xcpxipx, sphere, and Aipov, neck, in 

 allusion to the form of the thorax. 



PLATE 45. 



