Page:Supplement to harvesting ants and trap-door spiders (IA supplementtoharv00mogg).pdf/83

 I hope therefore that other naturalists will make further investigations, and especially that they will endeavour to secure the male.

I obtained twelve spiders and thoroughly followed the course of ten nests; I opened thirteen more nests, but failed to trace their structure satisfactorily.

The upper part of this nest is shown of the natural size in Plate XVII. with the spider (Nemesia suffusa, Camb. ) which constructs it. This is again a wafer nest without any lower door, and this absence of a lower door alone distinguishes it as a type from the branched nest represented at F in the diagram, just as the same deficiency separated the Bordeaux type from that at fig. E.

In this new single-door branched type, the branch makes a more or less acute angle with the main tube, and reaches the surface of the ground, but is there closed by a layer of particles of earth slightly bound together with silk, forming an immovable cover or thatch. This cover constitutes, however, but a slight obstruction and could easily be torn away by the spider if she needed to use this passage as a way of escape.

These nests were tolerably plentiful at a place called Les Mourines, a short distance from Montpellier, where they were mixed with cork nests in the steep hedge banks. The nests were from 8 to 10 inches deep, and, as in all the trap-door nests which I