i8 ON THE ORIGIN AND [CHAP. 



2. Herbivorous hexapod larvae, with fleshy, cylin- 

 drical bodies, somewhat curved, so that they lie 

 on their side. 



3. Apod grub- like larvae, with scarcely the rudiments 

 of antennae (Curculio). 



4. Hexapod antenniferous larvae, with a subovate 

 body, the second segment being somewhat larger 

 than the others (Chrysomela, Coccinella). 



5. Hexapod antenniferous larvae, of oblong form, 

 somewhat resembling the former, but with caudal 

 appendages (Meloe, Sitaris). 



The pupa of the Coleoptera is quiescent, and " the 

 parts of the future beetle are plainly perceivable, 

 being encased in distinct sheaths ; the head is applied 

 against the breast ; the antennae lie along the sides 

 of the thorax ; the elytra and wings are short and 

 folded at the sides of the body, meeting on the under 

 Side of the abdomen ; the two anterior pairs of legs 

 are entirely exposed, but the hind pair are covered by 

 wing-cases, the extremity of the thigh only appearing 

 beyond the sides of the body." l 



In the next three orders namely, the Orthoptera 

 (grasshoppers, locusts, crickets, walking-stick insects, 

 cockroaches, &c.), Euplexoptera (earwigs), and Thy- 

 sanoptera, a small group of insects well known to 

 gardeners under the name of Thrips (PL I. and II., 

 Figs. I and 2) the larvae when they quit the egg 

 already much resemble the mature form, differing, in 

 fact, principally in the absence of wings, which are 

 more or less gradually acquired, as the insect in- 

 creases in size. They are active throughout life. 



i Wfstwood's Introduction, vol. i. p 36. 



