M. Eugène Simon (l.c.) describes, as _N. cæmentaria_, Latr., both sexes of a spider found by himself in the Pyrenees and Spanish mountain regions. Languedoc and Provence are also given as localities, but it is not clear that he has himself found it in these latter parts, certainly not the male. Two examples of this sex, found in the Pyrenees, and received from M. Simon, are now before me; these correspond, so far, very exactly to the description he gives (l.c.); the female I have not seen. If the position assumed (p. 271) on Latreille's own authority, that the true male of _N. cæmentaria_, Latr., (_N. carminans_, Latr.), has a bifid point to the prolongation of the palpal bulb, it is clear that the present species is distinct from that of Latreille. M. Simon describes this palpal bulb as having its extreme point "simple et plus effilée" (_i.e._ more slender than in the preceding species he has described _N. meridionalis_). That the examples now before me, agreeing exactly with this description, are not the males of the species above described by myself as _N. cæmentaria_, Latr., from numerous females found at Montpellier, appears to me clear, not only because I assume that of the true _N. cæmentaria_, Latr., males will be found to have the point of the palpal bulb bifid, but because the position of the eyes is markedly different in M. Simon's Pyrenean males and the Montpellier females. In the latter the eyes of the front row are separated from each other by equal intervals, in the former the interval between those of the central pair is very perceptibly greater than that between each and the lateral of the same row nearest to it. The interval also between each of the fore-central eyes and the hind-central on its side is proportionally much less. It appears therefore necessary to characterize _N. cæmentaria_ (Sim. l.c.) by some other name, for if eventually it should be found that Latreille has erred in _N. carminans_ (with the _bifid point_ to the palpal bulb) being the male of his _N. cæmentaria_, and that the Montpellier species has a male with a _simple point_ to this part, even then the present spider cannot retain its name (_cæmentaria_), being distinct from the females found at Montpellier.