EXPLANATION OF THE PLATES. 



To face 

 Plate 1. — Fossils from the Silurian Rocks of Ayrshire and Wigtonshire, 



to illustrate Mr. Moore's paper on that district p. 16 



2. — Fossil Dragon Fly, LibelJula {Heterophlebid) dislocata, to illus- 

 trate a paper by the Rev. P. B. Brodie 35 



3. — Fragments of Insect wings, to illustrate Dr. Mantell's paper on the 



organic remains of the Wealden 39 



4, 5. — Fossil Zoophytes, to illustrate Mr. Lonsdale's paper on Fossil 



Zoophytes from Atherfield 102 



6. — Fossils from the Lower Silurian slates of Vallongo, to illustrate 



Mr. Sharpe's paper on the Geology of Oporto 150 



7. — Sections across the Hoher-Sentis, by M. A. E. Von der Linth, to 

 illustrate Sir R. I. Murchison's paper on the structure of the 

 Alps 312 



8. — To illustrate Mr. J. S. Bowerbank's paper on a Siliceous Zoo- 

 phyte, Alcyonites parasiticum 319 



9. — To illustrate Mr. D. Sharpe's paper on Tylostoma, a proposed 



genus of Gasteropodous Mollusks 378 



10, 11. — To illustrate Professor Owen's Notes on the Remains of 



Fossil Reptiles from the Greensand formations of New Jersey.. 383 



