22 THE BUTTERFLY VIVARIUM. 



naturalist. The curious Caddis "Worm, safe within 

 his moving castle of sticks and stones, should not he 

 omitted, as his final change to an elegant moth-like 

 insect is very remarkable ; and the Water Spider, 

 with his diving-hell formed of a glistening silver 

 globule of air, must not be overlooked. There are 

 also the important Pond Snails, represented on the 

 rock -work ; and many other things might be named 

 as suited to the water portion of the insect Vivarium, 

 which Avill be referred to and fully described in sub- 

 sequent Chapters, though there is not sufficient space 

 to exhibit them satisfactorily in our small drawing 

 of the Vivarium. 



To continue the description of my Frontispiece, 

 I must next call attention to two of the purple- 

 winged Dragon-flies, supposed to have emerged from 

 their chrysalides long enough to acquire their rich 

 purple colour; and there is also the broad -bodied 

 species, still hovering closely over the element which 

 formed the home of his infancy, but immersion in 

 which would now very quickly terminate his gay 

 career, and spoil the lace-work of his gossamer wings. 

 To the left, creeping over the grass, is the Rose 

 Beetle, in his golden armour, representing a very 

 numerous class of insects which might be introduced 

 with good effect; many of the Beetle tribe being 



