ioo BEETLES, GRASSHOPPERS, ETC. 



leg terminates in a claw, and that immedi- 

 ately behind this claw there are a variable 

 number of small joints. These joints form 

 the tarsus or foot, and their varying number 

 in different species forms a convenient ground 

 of arrangement. Beetles which have five 

 joints in each tarsus are called Pentamera; 

 those with five in the tarsi of the foremost 

 two pairs of legs and four only in the hind- 

 most pair, Heteromera ; those with four visible 

 joints in each tarsus, Tetramera; and those 

 having three, Pseudotrimera. There are 

 exceptions to this, as to every other rule ; 

 but on the whole it may be accepted as a 

 basis for a primary separation of the species. 



Of the species which have five joints to 

 all their feet the first section is devoted to 

 the Carnivorous beetles. The Green Tiger 

 Beetle (Cicindelacampestris), Plate VIII., Fig. 1, 

 belongs to a genus called by Linnaeus, on 

 account of the activity and ferocity of its 

 members, c the tigers of the insect tribes.' 

 They run and fly with equal facility, and are 

 furnished with tremendous mandibles, from 

 which there is no escape for their prey. The 

 species figured is a very handsome insect, 



