The _maxillæ_ are strong, divergent, cylindrical, with a small angular prominence at their inner extremity; they are furnished with hairs, but no denticulations, and there is a strong fringe of reddish hairs on their inner margins. The maxillæ are of the same colour as the palpi. The _labium_ is short and broad; its breadth double its height and its apex rounded. Its junction with the _sternum_ appeared to be about at right angles. It is darker in colour than the maxillæ, but with a paler apex; its surface is furnished with bristly hairs, but there are no denticulations at its apex. _Sternum_ oval, truncate before, pointed behind, furnished with bristly hairs, and of the same colour as the legs. The _abdomen_ is of an oblong-oval form, truncate before, and tolerably convex above; it is of a pale dull yellowish colour clothed with yellow-grey hairs, among which are a good many prominent dark bristly ones; the fore part of the upper side is irregularly marked with black-brown; following this towards the hinder part, and reaching half way or more to the spinners, is an indistinct longitudinal central line of the same colour, throwing off numerous short lateral lines at right angles; towards either side of the hinder two-thirds of the abdomen are several oblique black-brown lines extending more or less over the sides; one, about the middle, extends farther over the sides than the rest, and almost unites with a curved deep black-brown transverse line crossing the under side of the abdomen a little way in front of the spinners. The under side of the abdomen is similar in colour to the upper side, and, besides the transverse dark line above mentioned, there is another touching the anterior margins of the posterior spiracular plates; the superior pair of spinners are short and strong; the inferior pair small, and in the ordinary position, but apparently not (proportionally) so small as in the females of some other species. A single adult male was received for examination from M. Eugène Simon, by whom it was found at Digne (Basses Alpes, France). M. Simon conjectures that it may be the male of _Nemesia Moggridgii_ (p. 273), but some slight differences in the size and positions of the eyes, and in the pattern on the cephalothorax, and on the under, as well as the upper, side of the abdomen, lead me to believe that it is of a different, and hitherto undescribed species, though probably very closely allied to some others, especially to _Nemesia Manderstjernæ_ (_N. meridionalis_, Cambr., described, p. 283); in the present species however the hind-lateral eyes are much larger in proportion than in _N. Manderstjernæ_. _Habitat._ Digne, Basses Alpes, France. Nemesia dubia, sp. n., Plate XIX., fig. E, p. 229. Syn. _Nemesia cæmentaria_, Simon, _Aranéides nouv. ou peu connus du Midi de l'Europe_, Mém. Liège, 1873 (separate copy), p. 24. Adult male, length 5-1/2 lines to 6 lines.