viii List of Illustrations in the Text. 



PAGE 



Maps of Parts of the Ogasawara Chain, or Bonin Islands . 299 



Transverse Section through the Costabella Range 310 



Nautilus robustus 343 



Eock Section from Victoria Falls, South Africa 358 



Eock Section from the Modder Eiver, South Africa 361 



Eock Section from Forest Vale, South Africa 362 



Eock Section from near Bulawayo, South Africa 365 



Eiver Development 370, 371, 372 



Transverse Section through the Costabella Eange 384 



Tooth of Trogontherium Cuvieri 387 



Peripristis semicircularis and P. benniei , 390 



Section of Hornblende Porphyrite 393 



Section of Cordierite Felsite 395 



Sketch-map of a portion of the Eastern border of Dartmoor 398 



Former drainage of the same area 400 



Outlines of some Ostracoda 402 



Cliff between CasAvell Bay and Brandy Cove 407 



Ruffordia Goepperti {^e^axA) , 431 



Distal half of Humerus of Hippopotamus hipponensis 436 



Eiver Curves 452, 453, 454 



EopMynus prestvieii 490 



Brachypyge celtica, Anthracomartus palatinns, A. vollceliamis 491 



** Ogygopsis Klotzi, Eom., sp. . 530 



^ Bathyuriscus Mowelli, Walcott 533 



^ Neolenus serratus, Eom., sp 534 



^ Ptychoparia Cordillerc&, Eom., sp. . 536 



^ Zacanthotdes (Olenoides) spinosus, Walcott 538 



»^ Or y otocephalus Reynoldsi, Cowper Eeed 540 



Anomalocaris Canadensis, Whiteaves 542 



