. Economic entomology . Trap-door of Nemesia caementaria, overgrown by moss. Trap-door of Nemesia eleanora, on the bare ground. opened, does hold it back to the best of its ability, but there does not seem to be any mechanical or structural preparation for such a contingency. Then it was ascertained that in Jamaica, at least, the nest had sometimes two doors, a front and a back door, as it were, that is, the nest was made in a raised bank which it entered at one side and came out at the other. This was supposed to indicate a deliberate selection of such a site, on the calculation that, whichev
. Economic entomology . Trap-door of Nemesia caementaria, overgrown by moss. Trap-door of Nemesia eleanora, on the bare ground. opened, does hold it back to the best of its ability, but there does not seem to be any mechanical or structural preparation for such a contingency. Then it was ascertained that in Jamaica, at least, the nest had sometimes two doors, a front and a back door, as it were, that is, the nest was made in a raised bank which it entered at one side and came out at the other. This was supposed to indicate a deliberate selection of such a site, on the calculation that, whichever door was forced, it could then escape out at the other; but this implies a greater stretch of foresight than the circumstances warrant. It seems more likely that the spider commenced its burrow in ignorance, that it would break out on the other side of the bank, and that when it found it had done so, its trap-door-forming instinct came into operation, and led it to build a door at that opening as it had done at
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Keywords: ., bookcentury1800, bookdecade1870, bookpublisherlondonchapmanandha
