COLEOPTEEA. 457 



market- gardeners, who employ the tannin of the oak bark, have 

 rendered this Coleopteron very common in the environs of that 

 capital. Fig. 438 represents an exotic species, the Oryctes dicho- 

 tomus. 



Among the true Scarabm 9 we meet with many species of 

 gigantic size, especially in America. The Scarabceus Hercules, a 

 great insect of a fine ebony black, with its elytra of an olive grey, 



Fig. 438. Oryctes dichotomus. 



is not rare in the Antilles. Its thorax is prolonged into a horn as 

 long as- its body, and bent round at the extremity ; its head has 

 also a long horn standing erect. The females want these append- 

 ages. Fig. 439 represents the Scarabteus claviger of Guyana. 



Fig. 439.^-Scarabaeus claviger. 



The Geotrupes are insects almost as common as the chafers, As 

 their name reminds us, they make holes in the ground, which they 

 scoop out particularly in meadows, under cow*dung which has 

 grown dry on the surface. It is under the excrements of ruminating 



