BEETLES. 13 



drical joints. Here belong the Tiger-beetles, Ground- 

 beetles, Carnivorous Water-beetles, Whirligigs. 



B. Clavicomia (Club-horns). These beetles have the 

 feelers thickened gradually or abruptly toward the tip. 

 Here belong the Burying-beetles, Rove-beetles, Lady- 

 bugs, Carpet-beetles. 



C. Serricornia (Saw-horns). These beetles have the feel- 

 ers toothed or serrated. Here belong the Snapping or 

 Click-beetles, the Saw-horned Borers, the Fire-flies, the 

 Soldier-beetles. 



D. Lamellicomia (Leaf-horns). These beetles have the 

 knob of the feelers composed of several leaf-like or 

 blade-like parts, which can be closed together at will. 

 Here belong the Stag-beetles, "Tumble-dungs," May- 

 beetles, Flower-chafers, Rhinoceros-beetles. 



E. Phytophaga (Plant-eaters). Most of these beetles 

 possess thread-like feelers, which are frequently very 

 long, or shorter and slightly thickened towards the tip. 

 The fourth and fifth joints of the tarsi are consolidated, 

 and the former is minute, and sometimes difficult to de- 

 tect. Here belong the Long-horned Borers, the Leaf- 

 feeding beetles, the Seed-beetles. 



2. Heteromera (Different joints). The beetles contained in 

 this division have five-jointed tarsi in each of the front and 

 middle legs, and only four in each of the last pair. 

 This section requires no division into tribes. Here belong 

 Oil-, Blister-, and Meal-beetles. 

 II. Rhynchophora (Snout-beetles), in which the front part of 

 the head is more or less drawn out into a beak or rostrum ; the 

 labrum is not distinguishable, and the palpi are reduced to 

 minute points without joints. 



In this sub order belong a number of families, some contain- 

 ing but a very few genera or even species. Here, belong the 

 Broad-snouted beetles, the True Snout beetles, such as the 

 Nut-weevils, the Rice and "Bill-bugs," the Leaf-rollers, and the 

 Bark-beetles. 



