Plate IX., fig. A. — The nest of "Nemesia meridionalis"; A 1, the open surface-door and mouth of the tube of the same ; A 2, the inner and upper surface of the lower door ; A 3, the spider ; A 4, the same deprived of its legs, from a specimen preserved in spirits A, A 1, 2, 3, and 4 are of the natural size ; A 5, the spider viewed sideways, with the legs removed ; A 6, the eyes, viewed from above and in front ; A 7, the cephalothorax and falces; A 8, the left hand falx viewed from the inner side; A 9, the fang of the same; A 10, the tarsal joint of the foremost right leg; All, one of the two larger and the smallest claw of the same A 5, 6, 7, 8, 9, 10, and 11, magnified ; B, a mass of earth containing the minute nest of a young spider ("N. meridionalis") ; B I, the lower door of this nest; B 2, the spider B, B 1, and 2, of the natural size.