4G8 CLASS INSECTA. 



never entirely concealed or encased by the other two. The 

 labruni does not project, and its anterior extremity at the 

 most is uncovered. The mandibles are always corneous, and 

 laterally pass the edge of the head. The jaws are corneous 

 or solid, straight, and generally indented. The tongue is 

 covered by the mentum, ovoid or triangular, narrowed and 

 truncated at the end, with the angles often dilated. All the 

 feet are inserted equidistant from each other. 



A first division will include the Geotrupes of Fabricius. 

 The males differ from their females by peculiar eminences in 

 the form of horns, by tubercles either on the head or corslet, 

 or on both, and sometimes also by the form of the latter. 

 The hood is small, truncated or bidentated at the end. 

 The labrum is almost always entirely concealed. Here the 

 jaws terminate in a simple coriaceous lobe, crustaceous, more 

 or less downy, and without teeth ; there they are altogether 

 scaly, go to a point, and have only a small number of teeth 

 accompanied with hair. The mentum is ovoid, or like a trun- 

 cated triangle. The chest has no projection. The hooks of 

 the tarsi are generally equal. The shield is small or middle- 

 sized. The colours approach black or brown. 



Sometimes the jaws terminate in a coriaceous or crustaceous 

 lobe, without teeth, and simply downy, or furnished with 

 spinuliform lashes. 



Oryctes, lUig. Scarabceus, Lin., 



Whose feet differ but little in length, and whose four hind 

 legs are thick, strongly incised or emarginated, with the ex- 

 tremity widened, as if starred in many. 



S. nasicornis, Lin. Rees. II. 6, 7- Fifteen lines long, of 

 a shining marron brown, with the point of the hood trun- 

 cated, a conical horn, more or less long, arched behind 

 on the head, the front of the corslet cut obliquely, with three 



