Plate XV., p. 198, fig. A.--Nest of _Cteniza Californica_ (Camb.) nearly entire, enclosed in the clayey earth of the bank from which the specimen was taken, the door being artificially represented as being partly open; A 1, door of the same as seen when closed; B, _Cteniza Californica_ (Camb.) from a living specimen; B 1, the same seen in spirits, the legs not represented; B 2, the same seen sideways; (figs. A, A 1, B, B 1 and B 2, are of the natural size); B 3, the eyes, greatly magnified; B 4, the three claws terminating the tarsal joint of the hindmost left leg; B 5, line representing the measured length of the spider excluding the falces and spinners, the uppermost division gives the length of the caput terminating at the half-moon-shaped fovea, the middle division that of the thorax, and the lowest that of the abdomen, while the transverse line gives the breadth of the cephalothorax; B 6, eggs laid by the spider in captivity on the under side of the gauze which covered the box (the position is reversed here) of the natural size; B 7, the same magnified; B 8, another group of eggs, magnified; B 9, a portion of the same still more highly magnified; B 10, lines showing measured lengths of legs of the 1st, 2nd, 3rd, and 4th pairs, and of palpus, with those of the several joints. Plate XVI., p. 211, fig. A.--Part of the nest of _Nemesia Simoni_ (Camb.) taken at Bordeaux; A 1, _N. Simoni_ (Camb.) from life, of the natural size; A 2, the same seen in spirits, the legs not represented; A 3, the same seen sideways and magnified; A 4, the eyes, magnified; A 5, the thoracic fovea, magnified; A 6, line showing measured length of spider, (see above explanation of fig. B 5, plate XV.); A 7, lines showing measured lengths of legs of the 1st, 2nd, 3rd, and 4th pairs, and palpus of spider, with those of the several joints. B, cephalothorax and abdomen of another specimen of _N. Simoni_, in which the proportions are different, taken from life, of the natural size.