LIST OF ILLUSTRATIONS 



Fig. page 



191. Outline drawing of Lasanius .... 262 



192. Pliotograph of the jaws of a large recent Shark 



{Car char odonrondeletii) ..... 264 



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



great Shark, Carcharodon megalodon . . 265 



193. Ammonites {Aegoceras) capricornus . . . 267 

 193a. Sliell of the Pearly Nautilus . . . .267 



194. Divided shell of the Pearly Nautilus . . .268 



195. The shell of Ancyloceras matheronianum . . 269 



196. Belemnites hastatus, ivoiw the Oxford Clay (Jurassic) 270 



197. Restored drawing of the animal in which the 



" Belemnite " is formed . . . . .271 



198. Loligo media, a cuttle-fish or scj[uid 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 rn<,<:tralis) . . 276 



203. Drawing of the remains of a Scorpion {Pahrophonus 



hunter i) . . . . . . .277 



204. Completed drawing of the Scotch Silm-ian Scorpion 



{Palceophonus hunter i) . . ■ .278 



205. Completed drawing of the Silurian Scorpion of 



Gothland {Palceophonus nuncius) . . . 278 



xxii 



