THE HETEROMERA. 173 



The SALPINGID.E, on account of some of their mem- 

 bers possessing a rostrum, afford a passage to the next 

 section, wherein such prolongation of the head is con- 

 stant, and with which they have been associated by old 

 authors. 



Their antennae are thickened at the apex, the last 

 joint of their maxillary palpi is not hatchet-shaped, 

 their mandibles do not project beyond the labrum, and 

 their body is smooth. 



They are all small and shining, and are found under 

 bark, or by beating dead twigs. 



Rhinosimus viridipennis (Plate XI, Fig. 3) is perhaps 

 the most elegant of the family ; it occurs not uncom- 

 monly in old hedges near Darenth. 



