COLEOPTEEA. 



471 



of small size, and are distinguished by their elytra, which are 

 short, and resemble a waistcoat or a jacket ; but their wings 

 are fully developed. The large species have strong mandibles. 



Fig. 463. Staphylinus (Ocypus, olens, imago, pupa, and larva. 



When irritated, the Stapkylini disgorge an acrid black liquid; 

 and by the abdomen they emit a volatile fluid having a musky 

 odour. 



Fig. 4(54. Staphylinus (Ocypus) olens. 



We see frequently on roads the Staphylinus olens (Figs. 463 and 

 464), which, when it finds itself attacked, raises its abdomen, and 



