448 ,! ZOOLOGY. 



however, they retnain without these organs. This is the 

 case with the bed bugs, for example. We arrange in this 

 order the pentatoma, the halys pr wood bug (Fig. 480 and 



Tig. 477, Sphinx of the Vine. 



481) &c., the nepas or water flea (Fig. 484), the cigale or 

 balm cricket (Fig. 482), the pucerons, the cochineal, &c. 

 We may also bring near to this group the flea (Fig. 483), for 



Fig. 478. Oak-Leaf Moth, 



