The Pelopæus knows nothing of these scientific methods. To the mud collected ready-made she adds nothing that develops resisting-powers later; when attacked by water, her cells quickly become soaked and allow the moisture to ooze through to the inside. Hence probably, in her case, the necessity for a thick casing of plaster to protect the too permeable dwelling. Each potter has her portion: the giantess, the rough covering of loam; the dwarf, the thin coating of varnish. Despite their inner glaze, the Agenia’s cells are too readily affected by water and moreover too fragile to remain exposed to the open air with impunity. They need a shelter quite as badly as those of the Pelopæus. This shelter is found in all manner of places, excepting our houses, where the frail potter very rarely takes refuge. A tiny cavity under the stump of a tree; a hole in some wall or other, exposed to the sun; an old Snail-shell under a heap of stones; a Capricorn’s disused burrow bored in the oak; an Anthophora’s [31] deserted dwelling; a fat Earth-worm’s mine-shaft opening on a dry bank; the hole whence the Cicada [32] has emerged: anything, in short, suits her, provided that the accommodation be sheltered from the rain. Once only did Agenia punctum, who is more frequent than the other, pay me a visit. She had established her collection of pots in some little paper bags lying on the shelves of a green-house and intended to hold seeds. This nest-building on a sheet of paper reminded me of the Pelopæus confiding her cells to the books in a distillery or the curtains of a window. Indifferent to the nature of the support for their nests, both potters sometimes choose very curious sites. Now that we know the provision-jar, let us ascertain what it contains. The Pelopæus’ larvæ are fed on Spiders, a diet likewise dear to the Ageniæ and to the Pompili. [33] The game does not lack variety, even in the same nest and the same cell. Any Spider may form part of the ration, provided that her dimensions do not exceed the capacity of the jar. My abstracts of victuals mention the following genera: Epeira, [34] Segestria, Clubionus, [35] Attus, Theridion and Lycosa; [36] and the list could no doubt be extended, were it worth while to continue the bill of fare. The Epeiræ are most numerous. Those recurring most frequently belong to the following species: E. diadema, scalaris, adianta, pallida and angulata. The Diadem Epeira, or Cross Spider, [37] with three crosses of white dots on her back, is the dish that occurs oftenest.