is probably but little missing from the posterior end. The anterior half bears 9 teeth which have rounded roots in sockets. The teeth in the fragment of the maxilla have flat chisel-shaped crowns with the outer face feebly ridged. Probably those of the mandible were similar in this respect. The most remarkable thing about the dentition is that the most anterior of the teeth is larger than the others, and may be looked on as a canine. The total length of the dental series is 35 mm. Most of the teeth have a diameter of between 3 and 4 mm., but the anterior tooth has a diameter of 5 mm. The specimen is from the Cave sandstone of the Stormberg Series, which, in my opinion, is of Lower Jurassic Age. Formerly the bed was believed to be Triassic, but the discovery in it of a true Crocodile (Notochampsa) seems to show that we should regard it as Lower Jurassic. And this discovery of a Predentate Dinosaur seems to confirm the conclusion. Even considering the sandstone as Lower Jurassic, Geranosaurus would still be the earliest known member of the Predentata. All the specimens are in the palæontological series of the South African Museum, except those represented in figures 2, 3, 5, 18 and 23, which are in the Government Museum, Bloemfontein. LITERATURE. In Baron von Huene's recent magnificent work, "Die Dinosaurier der Europäischen Triasformation" a full list is given of the literature of the South African Stormberg Dinosaurs and of the allied forms of Europe and America. 7. Left manus of Gryponyx africanus. × 39. The hand is represented with the bones of the forearm and digits lying in one plane. The carpal elements are placed in what appears to be the natural position, 8. Portion of manus of Gryponyx africanus, with the carpals represented in the position in which they were found. 9. Left 1st metacarpal of Gryponyx africanus. Nat. size. 10. Left 1st metacarpal of Massospondylus carinatus. Nat. size. 11. Left 1st metacarpal of Massospondylus harriesi. Nat. size. 12. Left 1st metacarpal of Etonyx palustris. Nat. size. PLATE XVI. × 54. × ⚫65 13. Left humerus of Massospondylus harriesi. The hand is represented with what appears to be the natural position of the bones when the limb rested on the ground. The metacarpals and the penultimate phalanges of the 2nd and 3rd digits are considerably foreshortened. PLATE XVII. 18. Right pes of Massospondylus harriesi. X .35. X .38. × 41. 23. Left manus of Etonyx palustris. X 42. is seen in front. 24. Imperfect lower jaw of Geranosaurus atavus. About nat. size. The predentary |