NESTS OP APOICA. SSV 



In the first place, their upper smfaces are more or less convex, 

 according to their size ; and whether they are circular or hexa- 

 gonal, the convexity remains the same. This form is evidently 

 intended for the purpose of making them weather-proof; for the 

 rain torrents that occasionally deluge the country would soon 

 wash to pieces any nest whereon the falling drops could make 

 a, lodgment. The surface is therefore as smooth as that of the 

 various pasteboard wasps which build in the forests of tropical 

 America. 



The upper surface being convex, it naturally follows that the 

 under surface is concave, inasmuch as the cells are of tolerably 

 equal length. In fact, the nests somewhat resemble very shallow 

 basins with very thick sides, and bear an almost startling re- 

 semblance to the cap of a very large and very well-shaped 

 mushroom, the central specimen being so fungus-like in form 

 that, if it were laid on the ground in a waste and moist spot, it 

 would soon be picked up as a veritable mushroom. The colour, 

 too, is yellowish brown, and the surface has a kind of semi- 

 polish that increases the resemblance. 



In the nests of our common wasp, or hornet, the sheets of 

 paper which form the exterior show plainly where each suc- 

 cessive flake has been deposited, and the sweep of the insect's 

 jaws is marked distinctly upon the yielding material Even in 

 the case of the few British species which build pensile nests in 

 the open air, the separate flakes can be distinguished, though 

 they are not so cleai'ly marked as in those homes which are 

 defended from the weather by earth or wood. Our temperate 

 region knows no such sudden vicissitudes of weather as take 

 place near the equator, and there is no need for insect habita- 

 tions to possess very great strength or powers of resisting water. 

 But in these nests the covet is so beautifully uniform, that no 

 trace of a jaw can be detected upon it. 



Agreeing in general appearance, the nests vary somewhat in 

 colour. Of the eight specimens, the generality are of the mush- 

 room-like hue which has already been mentioned. Others, how- 

 ever, rather vary in this respect, and the imiform yellowish 

 brown is pleasingly diversified by patches of red. One of the 

 uests, however, boldly departs from the general uniformity, the 

 surface being not only reddish brown over its whole extent, but 

 as rough as if made of sand-paper, or from the skin of a dogfish. 



