The figure-of-8 cell which she constructed at first, and subsequently modified until it became the oblong enlargement of the tube alluded to above, was totally unlike any form of trap-door spider's nest known to me; but in its ultimate shape (which resembled that of the glass part of a thermometer with an oblong bulb, save that it was curved and not straight), I think we may trace some resemblance to the silk tube which is made by _Atypus_, and of which a figure is given at A, Plate XIII., p. 183; the mouth of the tube made by my captive was, however, open. It is curious, also, when we recall this resemblance, to note that Mr. Brown has recorded, in his observations alluded to above (p. 185), that the tube of one of the nests of _Atypus_, which he brought home in a collapsed state, showed a somewhat similar tendency to become distended. For, on opening the box in which they had been carried, he perceived a movement throughout the tube as if it were becoming inflated, and though this inflation appeared to subside shortly after, yet the following morning the tube had recovered its cylindrical shape. I am tempted to believe, though this is mere conjecture, that the box in which these tubes were put contained moisture, and that their apparent inflation was due to the same hygrometric action which, was displayed in the tube of _N. Eleanora_. I regretted that I was unable to continue my observations on this captive spider, as it would have been interesting to know how long she would have lived contentedly and in good health under the conditions described above, but I left Mentone at the end of April, and was unable to take her alive with me to England. When removed from her nest in the pot on April 12, she appeared in perfect condition, and I placed her in a hole which I made for her among some stones in a garden at the back of the house, hoping to find her again on my return to Mentone in the autumn; this hope was, however, not destined to be realized. I shall, however, have occasion to speak again of the young captives of this species (_N. Eleanora_), in the concluding remarks which will follow these detailed accounts of the nests and their occupants, when the behaviour of captive trap-door spiders generally will be treated of. The next type of trap-door nest is one to which I have found it difficult to assign a descriptive name, and I am compelled for the present to speak of it as the _Hyères double-door branched wafer_ nest.