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.
On the whole it may be concluded that the male of the true N. cæmentaria, Latr., will be found to have the bifid point to the palpal organs, but the
