DWELLINGS 1621 



in which the larvae can effect their development, 

 and from which they will emerge either by them- 

 selves perforating a thin wall which separates them 

 from daylight, or by an opening which the careful 

 mother has left to allow them to attain liberty with- 

 out trouble. 



The second class of habitation, which I have called 

 the woven dwelling, proceeds at first from the parcel- 

 ing up of substances, then of objects capable of being 

 entangled like wisps of wood or straw, then of fine 

 and supple materials which the artisan can work to- 

 gether in a regular manner, that is to say, by felting 

 or weaving. 



There are, first, cases in which the will of the ani- 

 mal does not intervene, or at least is very slightly 

 manifested. The creature is found covered and pro- 

 tected by foreign bodies which are often living be- 

 ings. Spider-crabs (Ma'ia), for example, have their 

 carapaces covered with algae and hydroids of all 

 sorts. Thus garnished, the Crustaceans have the ad- 

 vantage of not being recognized from afar when they 

 go hunting, since beneath this fleece they resemble 

 some rock. H. Fol has observed at Villefranche- 

 sur-Mer a Ma'ia so buried beneath this vegetation 

 that it was impossible at first sight to distinguish it 

 from the stones around. Under these conditions the 

 animal submits to a shelter rather than creates it. 

 Yet it is not so passive as one might at first be led 

 to suppose. When the algae which flourish on 

 its back become too long and impede or delay its 

 progress, it tears them off with its claws and thor- 

 oughly cleans itself. The carapace being quite clean, 



