A Part of the fossils described in the accompanying paper were presented to the British Museum (Natural History) by the late Mr. Edward T. Hardman, F.G.S., F.R.G.S.I, in December, 1886; having been collected by him during his exploration of the Kimberley District of Western Australia, in 1883. Some additional specimens, forming a part of this collection, have been obligingly forwarded to me by Professor Edward Hull, LL.D., F.R.S., Director of the Geological Survey of Ireland; having been found, since Mr. Hardman's death, in the Survey Office, Dublin.

Several of the tubes of this singular genus are exposed in section on the weathered (water-worn ?) surface of a piece of limestone. The tubes are of an elongate conical form, rather rapidly tapering, and straight or slightly curved, the longest about 10 lines; each contains several smaller tubes one within the other, the last of these little hollow cones being the chamber of habitation. The shell is thick, and has consequently not been crushed, two or three of the inner tubes retaining their cylindrical form, as seen in the section Fig. 1b.

During a residence of six weeks at Bude, in the autumn of 1889, I enjoyed the opportunity of studying the Culm-measures exposed in the bold cliffs of that part of the coast of Cornwall. I know of no easily accessible place where the flexures and contortions into which strata have been thrown by earth-movements can be studied with greater advantage. Between Bude-haven and Menachurch Point, a distance of one mile as the crow flies, there are at least eleven synclinal and as many anticlinal folds, presenting a variety of flexures of considerable interest to the geological student.

The District included under the term “South Bedfordshire” is that which lies between the escarpment of the Lower Greensand and the extreme southern limit of the county. Within this area the portion that has been most closely examined is that through which the Midland Railway passes, every excavation of which has been visited, in many cases frequently, both during the construction of the line, and also subsequently.