III.] 



METAMORPHOSES OF INSECTS. 



49 



^Egina may be taken as the type, is, as he says, 

 distinguished by the absence of a hydriform stage, 

 "the ovum becoming developed through direct 

 metamorphosis into a medusiform body, just as in 

 the other orders it is developed into a hydriform 

 body." Fig. 34 represents, after Allman, a colony of 



FIG. 34. Colony of Bougainvillea fruticosa, natural size, attached to the underside 

 of a piece of floating timber (alter Allman). 



Bougainvillea fruticosa of the natural size. It is a 

 British species, which is found growing on buoys, 

 floating timber, &c., and, says Allman, 1 " when in 

 health and vigour, offers a spectacle unsurpassed in 

 interest by any other species every branchlet 

 crowned by its graceful hydranth and budding with 



1 Loc. cit. p. 315. 



