66 INSECTS. 



is formed of thin, flat, distinct joints, as at fig. 31, 3, 

 it is called per foliate, and when the antennae form an 

 angle, as at 4 and 6, it is geniculate, kneed or elbowed. 



In beetles of the Section PENTAMERA the antennae 

 generally afford some indication of the habits of the 

 insects, though exceptions are numerous. Thus, those 

 with slender, filiform antennas are mostly found to feed 

 on living insects. Those with club-shaped antennae on 

 dead animal or vegetable matter ; those with lamellate 

 and fissate clubs, and also those with slender serrate 

 antennae, on living plants. 



The Pentamerous beetles are divided into four Sub- 

 sections.* 



The first is ADEPHAGA ('ASrj^ei'yoe, adepliagos, raven- 

 ous), and contains predaceous beetles, both land and 

 water, which have long horns and two pairs of palpi on 

 their maxillae. (See fig. 4, p. 65.) 



These are again subdivided into land and water 

 beetles. 



Of the first Subdivision, Geodephaga (Fr), ge, earth), 

 or the land ravenous beetles, the tiger and violet beetles 

 (PL I. figs. 1, 2) are good examples. 



The tiger beetle, Cicindela campestris (PI. I. fig. I, 

 and fig. 3, a, b, p. 30), is often to be seen on heaths 

 and Sandy roads, and from its great beauty is very un- 

 likely to escape observation. It is easily recognised by 

 its elegant shape and beautiful colouring, and by the 

 remarkable agility of its motions, both running and 

 using its wings with a freedom rare among beetles. 



A slender, yet strong-looking little creature, with 

 large eyes, compact thorax, and throat and waist well 



* See the table at the end of Coleoptera. 



