COLEOPTERA, 



457 



size, especially in America. Dyfiastes Hercules, a great insect of a 

 fine ebony black, with its elytra of an olive grey, is not rare in the 



t» 



Fie. 436.— Head of Oryctes nasicornis, 

 mile. 



^^^ 



^^r 



Fig". 435. — Oryctes nasicorn'f;, male. 



Fig. 437- — Head of Oryctes nasicornis, 

 female. 



AntiPes. 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 appendages. Fig. 439 

 represents the Golofa clai'is^er of Guyana. 



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



Fig. 438. — Xylotrupes dichotomus. 



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

 M scoop out, particularly in meadows, under cow-dung which has grown 



I 



