XX11 SYSTEMATIC INDEX. 



ORDER I. COLEOPTEROUS INSECTS. 



These insects have elytra, or cases, covering the wings, with a 

 division straight down the back. 



1. Scarabaus or Beetle tribe. Rove the extremity of their 



antennae cleft like a comb .page 280 



Cockchafer ib. 



2. Stag-beetle tribe. Have the extremity of their antennae 



compressed and cleft like a comb, with one side broader 

 than the other; and the jaws stretching out from the 

 head, and toothed , 281 



Great Stag-beetle 282 



3. Borer or Ptinus tribe. Have the antennae of an equal 

 thickness throughout ; and the thorax angulate, roundish, 

 and receiving the head 282 



Death-watch ib. 



4. Glow-worm tribe. Have the antennae of equal thickness 

 throughout ; the upper part of the thorax entirely cover- 

 ing the head ; and the elytra, or wing-cases, flexible. . . . 282 



Common Glow-worm il. 



5. Earwig tribe. Have the antennae bristle-shaped; the 

 wing-cases very short ; and a forceps, or a kind of nip- 

 pers, at the end of the tail 283 



Common Earwig ib. 



ORDER II. HEMIPTEROUS INSECTS. 



In these insects the upper wings are semicrustaceous, not divided 

 straight down the middle, but the base of the left covers the 

 inner margin of the base of the right. 



6. Cock-roach tribe. Have their mouth with jaws ; the wings 

 leathery and plain ; and the legs formed for running, and 

 not for leaping 283 



Common Cock-roach ib. 



7. Locust tribe. Have their mouth with jaws ; and the hind 

 legs formed for leaping 284 



House Cricket 284 | Migratory Locust ib. 



8. Lantern-fly tribe. Have the front of the head projecting, 

 and inflated ; and the antennae ending in a knob 284 



Great Lantern-fly 285 | European Lantern-fly .... 285 



