10 



INTRODUCTION. 



angles to the axis of the body, and the three thoracic segments are 

 short, so that all the legs are brought close together near the head. 

 The integument is stout but, except that of the head, not chitinous, 

 and in the two posterior thoracic, and the first six- or seven 

 abdominal rings, is thrown into deep folds, generally three to 





Fig. 6. — (17) larva, {h) pupa, (r) imago (male) of Oryctcs rhinoccroi', with lateral 

 aspect of ((/) head and thorax, {r) end of bodj', of male, (./) eud of body of 

 female. 



each segment, but these are absent in the Lucaxid.l", Passalid.*:, 

 and a few of tl»e Scarab.eiu,!;. The three or four last abdominal 

 segments are very large and have tlie integument stretched to its 

 fullest extent, smooth, and often partly lrans[)arent. In many 

 (."oi'RIN.t: a large hump appears upon the back as already 

 mentioned. 



Eyes are rarely fouiul, but the antennae are well-developed. 

 They are generally slender and consist of four joints, but in the 

 Passalid-D they are very short and consist of only two joints. 



