The _maxillæ_ are strong, straight, divergent, with a small prominent point at the inner extremity of each; they are as strong, but not so long, as the basal (coxal) joints of the legs of the first pair, of a yellow-brown colour, furnished with hairs, but with no spines of any sort or size. The _labium_ is similar in colour to the maxillæ, and somewhat quadrate in shape, rounded at the apex; it is furnished with hairs only. The _sternum_ is of a sub-pentagonal form, much broader behind than in front; its colour is dull yellowish-brown, and it is furnished with hairs, leaving two largish, bare, round, slightly impressed patches, not far from each other, in a transverse line near the middle. The _abdomen_ is short-oval in form, and very convex above; it projects a little over the base of the cephalothorax, and its upper side is of a purplish grey-brown hue, mottled with a pale dull whitish-yellow, and furnished sparingly with hairs. The sides and under side are of a uniform dull whitish-yellow. The _spinners_ (four in number) are, as usual, of very unequal size, those of the superior pair longish, strong, three-jointed, and up-turned, the inferior pair short but stout, consisting of one joint only and pretty close together. The _female_ (as it is conjectured to be) of this species was described, in the work to which the present publication is supplementary, from examples found at Mentone. There is little doubt now but that it is not _Ct. fodiens_, Walck., but whether or not identical with the male above described is not absolutely certain. I think myself (with Mr. Moggridge, see p. 195) that it is so, in spite of some differences in the relative size of the eyes, the toothing of the under side of the falces, and the denticulation of the tarsal claws. With regard to the eyes and falces, I am not inclined to lay special stress upon these differences. It is found that in other groups of spiders whose cephalothorax varies very markedly in development in the two sexes, differences of this nature occur. In the present genus, the male has an almost flat caput, while the female has a strongly elevated one; and with respect to the variation in the tarsal claws, no special weight can be attached to it in the present instance, since these claws are not uniformly denticulated in the different feet of the same individual. Another difference is the absence in the male of sundry small but distinct tooth-like spines at the apex of the labium and the inner corner of the base of the maxillæ; the female is also wanting in regard to the very characteristic transverse indentation which divides the caput of the male into two parts. I can, however, trace in the female the slightest possible corresponding depression, scarcely amounting to an indentation, and placed rather nearer to the junctional thoracic pit.