1. Calyptraea radians.
2. Turritella cingulata.
3. Oliva Peruviana.
4. Murex labiosus, var.
5. Nassa (identical with a living species).
6. Solen Dombeiana.
7. Pecten purpuratus.
8. Venus Chilensis.
9. Amphidesma rugulosum. The small irregular wrinkles of the posterior part
of this shell are rather stronger than in the recent specimens of this
species from Coquimbo. (G.B. Sowerby.)
10. Balanus (identical with living species).

On the syenitic ridge, which forms the southern boundary of Herradura Bay
and Plain, I found the Concholepas and Turritella cingulata (mostly in
fragments), at the height of 242 feet above the sea. I could not have told
that these shells had not formerly been brought up by man, if I had not
found one very small mass of them cemented together in a friable calcareous
tuff. I mention this fact more particularly, because I carefully looked, in
many apparently favourable spots, at lesser heights on the side of this
ridge, and could not find even the smallest fragment of a shell. This is
only one instance out of many, proving that the absence of sea-shells on
the surface, though in many respects inexplicable, is an argument of very
little weight in opposition to other evidence on the recent elevation of
the land. The highest point in this neighbourhood at which I found upraised
shells of existing species was on an inland calcareous plain, at the height
of 252 feet above the sea.

It would appear from Mr. Caldcleugh's researches, that a rise has taken
place here within the last century and a half ("Proceedings of the