Mr. J. C. Moore on some Tertiary Shells from Jamaica. 549 



be the footsteps of some kind of reptile. He also stated, as con- 

 firmatory of the ' Old Red ' age of the beds, that the Oolitic beds of 

 Shandwick are unconformable to the Old Red Sandstone. 



2. " On some Tertiary Shells from Jamaica." By J. Carrick 

 Moore, Esq., F.R.S., F.G.S. With a Note on the Corals, by P. 

 Martin Duncan, M.B. Lond., F.G.S. ; and a Notice of some Fora- 

 minifera, by Prof. T. Rupert Jones, F.G.S. 



An examination of 7 1 species of Tertiary Mollusca from Jamaica, 

 mostly collected by the late Mr. Barrett, showed that 12 are still 

 living, and that 28 are common to the Tertiary beds of Jamaica and 

 St. Domingo. The same relation between those deposits had been 

 found to exist by Dr. Duncan through a comparison of the Corals. 

 The * Pacific' affinity of many of these Shells and Corals was noticed 

 as confirmatory of a conclusion arrived at by the author in a former 

 paper ; and it was shown, from the occurrence of Tertiary beds on 

 the Panama Isthmus at a height of 250 feet above the sea, that the 

 complete separation of the Atlantic and Pacific Oceans did not take 

 place until after the commencement of the Tertiary period. The 

 distribution and affinities of the Nummulince and Orbitoides were 

 described by Prof. Jones, and those of the Corals by Dr. Duncan. 



3. " On the Geology and Mineralogy of a part of Borneo." By 

 M. Cornelius de Groot. 



A collection of specimens from Borneo and Java, presented by 

 the author to the Museum of Practical Geology, was accompanied 

 by some explanatory notes, in which it was stated that the Steam- 

 coal of Borneo underlies the Nummulitic Formation, and probably 

 belongs to the ' Etage Suessonien' of D'Orbigny. The occurrence 

 of tin in stream-works, and as veins in granite, at several places 

 in the Western portion of Borneo and the Islands of Blitong and 

 Banka, was particularly described, as well as the presence of ores 

 of copper and manganese. Some Tertiary fossils from Borneo and 

 Java were also noticed. 



4. " Description of a new Fossil Thecidium from the Miocene 

 Beds of Malta." By J. Denis Macdonald, Esq., F.R.S. 



Amongst the many fossils occurring in the lower part of the 

 Calcareous Sandstone of Malta is a small Thecidium, nearly allied 

 to the recent T. Mediterranea, but much smaller than that species, 

 and, on close inspection, presenting other and very decided specific 

 distinctions. Mr. Macdonald gave a detailed description and figures 

 of this new species, and proposed for it the name of Thecidium Adamsii. 



5. " On the Sandstones and Shales of the Oolites of Scarborough, 

 with descriptions of new species of fossil Plants." By J. Leckenby, 

 Esq., F.G.S. 



The true position of the well-known Plant-bed at Gristhorpe 

 Bay, below the grey limestone, was first pointed out by Prof. Wil- 

 liamson, and afterwards by Dr. Wright ; and Mr. Leckenby showed 

 that all the plants, hitherto referred to the Upper Sandstone, Shale, 

 and Coal, belong to the Lower Sandstones and Shales, but few 



