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Show 20. Brain of Gymnorhina leuconota (ventral 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 ................................................................ 183 27. Wounded Oryx hiding in bushes ................................................. 188 28. Lateral view of head of a castrated Prongbuck, showing the abnormal growth and shape of the horns................................. 191 29. Section of the left compound horn-sheath of a castrated Prongbuck, slightly diagrammatic, showing the five component sheaths....................................................................................... 195 30. Type specimen of Procolophon minor, from Donnybrook .......... 218 31. Type specimen of Procolophon trigoniceps, from Donnvbrook . . 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 of Procolophon platyrhinus, 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), Peterborough ................................................................................... 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. Cetiosaurus 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.-Iiight humerus, anterior aspect, and transverse section showing internal cavity ..................................... 240 48. Cetiosaurus leedsi.-Upper portion of right radius and ulna, anterior aspect; and upper articular end of the same .......... 240 XX Page |