PLATE I.’ 
Fig. 
1. Chondrus (7) Binneyi, Azzy. Natural size. From the Red Marl at Newton, near 
Manchester. From a specimen in the cabinet of Mr. 
H. W. Binney. 
la = — Magnified figure showing the polygonal form of the seed- 
vessels, caused by pressing against each other, as ex- 
hibited in the upper part of the specimen. 
2. Polysiphonia (7) Sternbergiana, Aimy. Natural size. Marl-slate Thickley. 
3, 3a. Caulerpa (?) selaginoides, Sternberg. Fig. 3a belongs to the lower part of 
fig. 3. View of a specimen of the natural size presented by Mr. G. Rippon to 
the Museum of the Natural History Society of Northumberland, Durham, 
and Newcastle-on-Tyne. Cornforth. 
4. Neuropteris Huttoniana, A7vmy. A pinnule nearly twice the natural size, showing 
the venation. Marl-slate, Thrislington Gap. 
1 All the fossils figured belong to the author unless otherwise expressed. 
