Since 1877, when I discovered the Tertiary Mammalian beds of Santa Cruz, in Patagonia, I have been looking for proofs of the ancient connection between the new uplifted lands of the southern part of the American continent and the other lands of the Southern Hemisphere—Africa and Australia. During my subsequent travels in the interior of the Argentine Republic, including Patagonia, my interest in that connection has been increasing, and I have discovered additional evidence, which showed me the former greater extension to the east, in comparatively modern times, of the actual existing lands.

The following notes are devoted to a small series of Crustacea, not directly related to one another, but which have been awaiting a favourable moment for description.

An exceedingly well-preserved and nearly complete skeleton of the largest species of Dinornis, D. maximus, has recently been mounted and exhibited in the Palæontological Galleries of the British Museum (Natural History). The finding of this fine specimen has been described by its fortunate discoverer, Mr. C. A. Ewen, and to his paper a brief account of the remains themselves was added by Captain Hutton. It appears that the bones were found on shifting

Balbriggan is a village in County Dublin, some nineteen miles north of Dublin, and along the coast in its neighbourhood Ordovician and Silurian rocks are exposed for a distance of about five miles. These are described in the Irish Survey Memoirs, but from a recent investigation of the locality it seems desirable to give a fresh account of its geology.

The following notes have been drawn up from a small series of shells belonging to the late Tertiary and Post-Tertiary formations of Egypt, which form part of a collection of fossils sent home for determination by Captain Lyons, R.E., Director-General of the Geological Survey of Egypt.