LIST OF ILLUSTRATIONS. 



Vignette of Dura Deh, Coloured, .... Titk/pagc. 



Map of the District, Geologically Coloured, . . . page 5 



Sections showing the Series of Rock Groups, Primary and Secondakv, 21 



Plates — 



I. — First Group of Fossil Remains found in Dura Den, . 4J) 



II. — Figure of Glyptopomus Minor, .... .55 



III. — Figure of Glyptola3mus Kinnairdi, . . . - .63 



IV.— Perfect Figure of ditto, . . . • • .65 



V. — Figure of Plianeropleuron Andersoni, . . . .67 



VI. — Full Jugular Aspect of ditto, ..... 69 



VTI. — Figure of the large Holoptychius, ..... 73 



VIII. — Group of Fossil Remains, ...... 96 



Woodcuts — 



Sphenopteris Affinis, in the Dura Den Carboniferous Sandstone, . 48 

 Heterocercal and Homocercal Fins, .... 39 



Holoptychius Nobilissimus, . . . .56 



New Delineation of the type Holoptychiu.s, . .71 



