158 PROCEEDINGS OF THE SCIENTIFIC ASSOCIATION. 
NOTICES OF MEMOIRS. 
On the Older Tertiary Formations of the West Indian 
Islands. By P. Martin Duncan, M.B., F.R.S., F.G.S., 
etc. [Quart. Journ. Geol. Society , voh xxix. (1873), 
pp. 548-565.] 
In this communication Professor Duncan records the dis- 
covery of Echinolampas ovum-serpentis , Banina porifera , 
Terebratula carneoides, and Argiope clevei by Mr. P. T. Cleve, 
in certain strata in the island of S. Barts. From the 
associated fossils there seems little doubt that these strata 
are of pre-miocene age ; and thus the surmise made some 
years ago as to the eocene age of the Sanfernando beds 
in Trinidad, is placed on a basis of greater certainty. 
Professor Duncan describes a number of corals from the 
eocene limestone of S. Barts, and his memoir is illustrated 
by four plates. 
On Prorastomtjs Sirenoides. By Prof. Owen, C.B.,F.R.S., 
F.G.S., etc. [Quart. Journ. Geol. Soc ., vol. xxxi. 
(1875), p. 559.] 
A fossil sirenian mammal was in the year 1855 described 
by Prof. Owen under the above name, having been discovered 
in a hard grey limestone in Jamaica. The fossil in question 
has been submitted by Prof. Owen to a fresh scrutiny, and 
he has found that by further chiselling away the matrix, 
many additional characters were exposed. These are de- 
scribed and explained in this memoir, which is illustrated 
by two plates. 
