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20. Brain of Gymnorhina leuconota (yentral aspect), showing the 



principal branches of the arterial system 115 



21. Chart of the Cape Verde Islands 171 



22. Map of St. Antonio and St. Vincent 173 



23. Map of St. Jago 174 



24. Map of Bonavista 175 



25. Chart of Porto Praya 180 



26. Chart of Porto Grande iSS 



27. Wounded Oryx hiding in bushes 188 



28. Lateral view of head of a castrated Prongbuck, showing the 



abnormal growtli and shape of the horns 191 



29. Section of the left compound horn-sheath of a castrated Prong- 



buck, slightly diagrammatic, showing the five component 

 sheaths 1 95 



30. Type specimen of Procolophon ininor, from Donnybrook 218 



31. Type specimen of Procolophon trigoniceps, from Donnybrook . . 220 



32. Type specimen of Procolophon laticeps, from Donnybrook, 



showing the vertical occipital plate and the postorbital 

 foramen 223 



33. Palate of Procolophon cuneiceps, showing the molar teeth ; from 



Donnybrook 224 



34. Impression of a palate of Procolophon, showing crowns of the 



molar teeth ; from Fernrocks 225 



35. Outline showing the truncated snout ai Procolophon platyrhinns, 



from Fernrocks 226 



36. Outline showing the wedge-shaped snout of Procolophon spheno- 



rhinus, from Fernrocks 227 



37. Hind limbs of Procolophon, from Fernrocks 228 



38. Humerus and adjacent bones of fore limb, from Fernrocks .... 229 



39. Cetiosaurus leedsi, from Upper Jurassic (Oxford Clay), Peter- 



borough 233 



40. Cetiosaurus leedsi. — Posterior dorsal vertebra, lacking neural 



spine ; posterior and right lateral aspects 234 



41. Cetiosaurus leedsi. — Anterior caudal vertebra ; anterior and left 



lateral aspects 235 



42. Cetiosaurus leedsi. — Anterior caudal vertebra ; posterior and 



right lateral aspects 237 



43. CetiDsaurtcs leedsi. — Middle caudal vertebra ; left lateral, anterior, 



and posterior aspects . . . , 238 



44. Cetiosaurus leedsi. — Posterior middle caudal vertebra : left 



lateral, anterior, and posterior aspects 238 



45. Cetiosaurus leedsi. — One of the terminal caudal vertebrae, left 



lateral aspect 239 



46. Cetiosaurus leedsi. — Chrevron-bones 239 



47. Cetiosaurus leedsi. — Right humerus, anterior aspect, and trans- 



verse section showing internal cavity 240 



48. Cetiosaurus leedsi. — Upper portion of right radius and ulna, 



anterior aspect j and upper articular end of the same 240 



