BY EDGAR R. WAITE. 67 



within the fold, is similarly secured. More rarely an egg is 

 placed between two leaves where they cross each other, the two 

 being glued together. Occasionally a detached portion of a leaf 

 is used, and fixed against the wall of the tank, always, however, 

 at the surface of the water. Tf removed from the plant an egg 

 sinks, but the primary object of the attachment appears to be 

 protection, for I have intentionally detached some eggs and they 

 have developed equally well on the bottom. 



The larvae have grown rapidly since they were hatched, ten 

 days ago, but if their subsequent development is as slow as that 

 of Molge cristata, as recorded by Higginbottom,* it will be fully 

 three years before they are mature, even if I am successful in 

 rearing them. 



'Ann. Mag. Nat. Hist. (2), xii., 1S53, p.374. 



