292 INSECTA. 



the different systems which have been given, we select the following as 

 best calculated to render the reader acquainted with the transforma- 

 tions, as well as the principal forms, to which allusion will be made in 

 subsequent pages. 



(756.) I. INSECTA AMETABOLA. The larva resembles the perfect 

 insect, but is without wings. The pupa? of such species as have wings in 

 their imago state possess rudiments of those organs. The pupa runs 

 about and eats. 



a. With sucking mouths composed of four fine setas lying in a 

 sheath. 



(757.) 1st Order, ffemiptera*. In such insects of this order as 

 possess wings, which when present are always four in number, the an- 

 terior or upper pair are generally coriaceous in their texture for one- 

 half of their extent, while the posterior portion is thin and membranous, 

 a circumstance from which the name of the order is derived. The 

 Notonecta, or Water-boatman (fig. 144), is a familiar example : c and D 



Fig. 144. 



Notonecta. 



represent immature, and F mature, larvae. The pupa (G, H) differs little 

 in outward form from the perfect insect (E), but possesses only the rudi- 

 ments of wings. 



/3. Having mouths furnished with jaws, or distinct mandibles and 

 maxillae. 



(758.) 2nd Order. Orthoptera^. In this order the perfect insect 

 possesses four wings, the posterior pair being the largest ; and when at 



without giving any opinion as to its relative merits compared with others adopted by 

 different entomologists, but simply as being most convenient for our present purpose. 

 (Manual of Entomology, translated from the German of Dr. Hermann Burmeister 

 by W. E. Shuckard. 8vo. 1836.) 



* ijfjiiffvs, half ; irrepbv, a wing. f opObs, straight ; Trrtpov. 



