LIST OF ILLUSTRATIONS 



Fig. page 



191. Outline drawing of Lasanius .... 262 



192. Photograiih of the jaws of a large recent Shark 



{Carcharodonrondeletii) 



192a. Photograph of the natural size of a tooth of the 

 great Shark, Carcharodon megalodon 



193. Ammonites (Aegoceras) capricornus . 

 193a. Shell of the Pearly Nautilus 



194. Divided shell of the Pearly Nautilus 



195. The shell of Ancyloceras niatheronianum 



196. Belemnites hastatus, from the Oxford Clay (Jm'assic) 270 



264 



265 

 267 

 267 

 268 

 269 



197. Restored drawing of the animal in which the 



" Belemnite " is formed . . . . .271 



198. Loligo media, a cuttle-fish or sqiiid now living in 



British seas . . ..... 272 



199. Lingula {Lingulella) davisii, of the natural size, 



embedded in the slaty rock of Port Madoc, North 

 Wales 273 



200. One of the most ancient Trilobites known {Cono- 



coryphe lyelli) . . . . . .273 



201. Drawing of Triarthrus becki .... 275 



202. The Desert Scorpion {Buthus australis) . . 276 



277 



203. Drawing of the remains of a Scorpion (Pala'ophonus 



hunter i) ....... 



204. Completed drawing of the Scotch Silui'ian Scorpion 



(Palceophonus hunteri) ..... 27< 



205. Completed drawing of the Silurian Scorpion of 



Gothland {Palceophonus nuncius) . . .27! 



xxii 



