I send some drawings and a short description of a pretty little Brachiopod from the Lower Greensand of Godalming, of which, unfortunately, I possess at present only a few single valves, viz. 7 dorsal and 4 ventral valves. These are, however, sufficiently perfect to enable me partially to describe the shell, and I take the present opportunity of so doing, with the hope that, at some future time, better specimens may come to light. (See Pl. XII. Figs. 1–6.)

The species is apparently new, local in distribution, and, so far as I am at present aware, confined to the “Bargate stone” of Guildford and Godalming, the position of which is near the base of the ferruginous or upper division (of Fitton) of the Lower Greensand. From the partial outward resemblance of this shell to that of Terebratella Menardi, and from the fact of the hinge line and medial septum in the dorsal valve being of the same form in both, I am inclined to consider this species as a Terebratella: the peculiar form of the dorsal valve has suggested its specific name.

Terebratella trifida, n. sp. Shell (judging from a comparison of several single valves) as wide as long, in old specimens perhaps rather longer than wide; convex in both valves: dorsal valve moderately convex, and divided into three portions; a large, elevated, mesial fold, in the shape of an acute rib, occupying the entire central division, on either side of which, on the lateral divisions, there exist one or two ribs of small elevation, followed occasionally by a third of still smaller size;