The male of the spider here described has not been yet found. A description is given (p. 276) of a male spider, _Nemesia incerta_ (no doubt closely allied), found by M. Eugène Simon at Digne; but reasons will be given why it is not probable that this Digne spider should be, as conjectured by M. Simon, the male of the Montpellier species. Whether the _N. carminans_ (Latr.) is the male of _N. cæmentaria_ (Latr.) or not, is another question, and one surrounded with some obscurity and difficulty. Latreille described _N. cæmentaria_ (female) from Montpellier, and _N. carminans_ (male) from Aix in Provence; the latter being specially characterized by a bifid point to the prolongation of the palpal bulb; L. Dufour appears subsequently to have considered _N. carminans_, Latr. (male) to be the male of _N. cæmentaria_, and Latreille appears to have agreed with L. Dufour upon this, _vide_ Walck. _Ins. Apt._, i. p. 236; but Dufour afterwards (_Ann. Gen. Sc. Phys._, tom. v. Bruxelles, 1820, p. 103) introduced an element of confusion into the question by describing _N. carminans_ as having the point of the palpal organs simple, "nullement bifid," and throwing out a suggestion that it might be the male of _N. Sauvagii_, Latr., (= _N. pionnière_ or _fodiens_, Walck.) Latreille upon this (_Vues générales sur les Aranéides, Acad. Roy. des Sc._, 1830, pp. 64, 65) explains Dufour's suggestion as an inadvertence, but takes no notice of the difference of the form of the palpal organs as described by him; at the same time however Latreille explains why, probably, Walckenaer "still considers (in his _Faune française_) _N. carminans_ to be a distinct species." We may conclude from this that Latreille never altered _his_ opinion that his own _N. cæmentaria_ and _N. carminans_ were the two sexes of the same species; and we shall probably rightly agree with Walckenaer that Dufour had another species before him, which he wrongly (l.c.) described as _N. carminans_. Subsequently again a male and female spider, evidently of one species, were figured by Dugès to illustrate _N. cæmentaria_ male and female in Cuvier's _Règne Animal_--Edition in 20 vols. not numbered and without date, published in Paris, "_accompagnée de Planches par une réunion de disciples de Cuvier, MM. Audouin, Blanchard, Deshayes, Aleide d'Orbigny, Doyère, Dugès, Duvernoy, Laurillard, Milne Edwards, Roulin, et Valenciennes_." Of these figures, that of the male has the point of the palpal organs distinctly bifid, and the nest figured is of the cork-lid type.