LIST OF ILLUSTRATIONS 



Fig. page 



206. View of the anterior part of a recent Scorpion from 



below ........ 279 



207. View from below of the anterior part of the great 



Silurian Scorpion-like creature Pterygotua osilien- 



sis 280 



208. Photograph of a restored model of Stylonurus 



lacoanus) ....... 281 



209. Eurypterus fischeriy a marine Scorpion-like animal 



from the Silurian rocks of Rootzikul . . 282 



210. Dorsal view of the King-Crab {Limulus polyphemus, 



Linnapus), one-fourth the size of nature . . 283 



211. Diagram of the dorsal surface of a King-Crab . 284 



212. Diagram of the ventral surface of the same King- 



Crab 285 



213. Dorsal view of the eighteen segments and post-anal 



spine or sting ...... 286 



214. Slab containing Pentacrinus hemeri . . . 287 



215. Photograph of a block of Limestone of the Car- 



boniferous, showing several kinds of stone-lilies 



or Encrinites ....... 288 



216. Encrinus fossilis, of Blumenbach, the original 



♦' Stone-lily." 289 



217. The living British Encrinite, the minute young of 



the Feather Star-fish {Comatula or Antedon), 291 



218. Drawing by Mr. Berjeau from an actual specimen 



of the Feather Star-fish {Comatula or ArUedon 

 rosacea) ........ 292 



XXlll 



