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Show 23. Wina-structure of 24. Diagram of i• ntestin Cahl iponatist earnlb oaf. .R..h..y..n..c.h..c.e..a. ..c.a..p..e.n..s.i.*s.. ........1...............5...........7 25. Diagram of intestinal pattern of Hydrophasianus chirurgus . . . . 1° 26. Shoulder-muscles of (Edicnemus scolopax ............................... 27. Biceps of Chionis alba............................................................... ^ 28. Thigh-museles of Chionis alba ................................................. 29. Map of Mexico.......................................................................... 30. Diagram of the distribution of 250 Mexican species according to Altitude .............................................................................. 229 31. Diagrams to illustrate the contours of Mexico at different geological ages.......................................................................... 235 32. Diagrams to illustrate the contours of Mexico at different geological ages........................................................................... 236 33. Liver of Gerrhosaurus Jlavigularis, ventral aspect .................... 259 34. Liver of a second example of Gerrhosaurus Jlavigularis, ventral aspect .................................................................................. 259 35. Gastro-hepatic ligament of Gerrhosaurus Jlavigularis, showing course of muscular bundle..................................................... 261 36. Pancreas of Lacerta ocellata and of Gerrhosaurus Jlavigularis . . 262 37. Aortic arches and first part of dorsal aorta of Gerrhosaurus Jlavigularis ......................................................................... 263 38. Abdominal region of aorta of Gerrhosaurus Jlavigularis ......... 264 39. Lateral view of brain of Varanus exantliematicus and of Tupi-nambis nigropunctatus ........................................................ 268 40. Dorsal view of brain of Varanus exantliematicus .................... 268 41. The foetus of Acomys cahirinus................................................. 281 42. The placenta of Acomys............................................................ 282 43. A section of a portion of the placenta of Acomys .................... 283 44. A section through the junction between troplioblast and tropho-spongia of Acomys............................................................... 284 45. A diagram of a section through the centre of the placenta of Acomys................................................................................. ..285 46. Supposed clavicula of Diplodocus ...............................................290 47. Same bone of Diplodocus........................................................... ..290 48. Diagram of penis of Struthio.................................................... ..291 49. Os penis of European Otter .................................................... ..292 50. The Satyrus indicus of Tulpius ...................................................299 51. Early figure of Chimpanzee, from Astley's ‘ Travels ' ...............301 52. A, lateral, and B, upper view of the skull of Vulpes ferrilatus. . 304 53. A, upper, and B, lower right molar series of Microtus waltoni. . 307 54. The Black Guereza (Colobus satanas) ...................................... ..325 55. The Mantled Guereza (Colobus palliatus).................................. .326 56. Sharpe's Guereza (Colobus sharpei) ...........................................327 57. The White-tailed Guereza {Colobus caudatus) ..........................327 58. The White-thighed Guereza (Colobus vellerosus) .................... ..328 59. Principal arteries of Hatteria ................................................. ..403 60. Anterior abdominal and portal veins of Hatteria ................ 61. Heart and aortic trunks of Ophisaurus, to illustrate mode of origin of carotid................ ............................................. Page |