either does actually live, or has done so formerly, along the whole intervening line. I will now enumerate the species alluded to in the preceding pages and indicate briefly the habitats which they are known with certainty to occupy.
I. Atypus piceus, Sulzer (ex Simon). The builder of the tubular nest the silk lining of which is figured at A in Pl. XIII. It is stated by M. Simon[1] to be common in all the centre, east, and west of France, but it remains doubtful whether this exact form is found in England or not, the true characters and habits of the English species being still uncertain.
II. Cyrtauchenius elongatus, Simon, constructing the funnel type of nest. It inhabits the neighbourhood of Fez in Morocco.
III. Cteniza Moggridgii, Cambridge (formerly described under the name of Ct. fodiens[2]), one of the many builders of a nest of the cork type; I have hitherto found this spider only at Mentone and San Remo. It will probably be discovered in shady valleys in the neighbourhood of Nice.
IV. Ct. fodiens, Camb. (Ct. Sauvagii, Rossi ex Simon): large nest of cork type; inhabits Corsica. It has been said that the species found near Pisa (Ct. Sauvagii) is the same as that which is so common in Corsica, but it is desirable to have further confirmation of this.
V. Ct. Californica, Camb.—Large nest of cork type. Found near Visalia, about 350 miles south of San Francisco, by Mr. G. Treadwell.
