The Cionus 



cative over the whole surface of its body by 

 taking a long walk, the last of its larval life. 



7 P. M. The larva is once more motion- 

 less, lying flat on its belly. Is this the end 

 of its preparations? Not yet. The globu- 

 lar structure must have a foundation, a base 

 on which the grub can support itself in order 

 to dilate its ampulla. 



8 P. M. Round the head and the fore- 

 part of the thorax, which, like the rest of the 

 body, are touching the slip of glass, a border 

 of pure white now appears, as though snow 

 had fallen at these points. This forms a 

 sort of horse-shoe enclosing an area in which 

 the snowy deposit is continued in a vague 

 mist. From the base of this border some 

 threads of the same white substance radiate 

 in short tufts. This structure denotes work 

 done with the mouth, a miniature wire-draw- 

 ing. And in fact no such white substance is 

 seen anywhere except around the head. 

 Thus the creature's two ends take part in 

 the building of the hut: the one in front 

 provides the foundations, the one behind 

 provides the edifice. 



10 P. M. The larva shrinks. With its 

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