OBSERVATIONS. 



This is one of our largest species, and although 

 far less agreeably decorated than the preceding, 

 is yet distinguished by a more uniform garb of 

 polished metallic colouring. I captured the 

 specimen when descending the Arkansaw river, 

 w^ith a detachment of Major Long's exploring 

 party. 



The upper left figure. 



PLATE XXVI. 



