The Quarterly journal of the Geological Society of London . ather larger thanthe corresponding bone of a skeleton of T. gigantea Aldabra, the shell of which is about 123 centimetres long in 1 Mem. Soc. Geol. France : Paleontologie, vol. iv, Mem. 3 (1893) pi. [ii] xv, 182 DE. C. W. ANDREWS OX LOWEE MIOCENE [June 1914, a straight line. If this scapula belonged to Testudo crassa, itindicates that that species sometimes attained a much greater sizethan the type-specimen. The long diameter of the glenoid cavityof this specimen is about 9 centimetres, the same as in the scapulaof T. gi
The Quarterly journal of the Geological Society of London . ather larger thanthe corresponding bone of a skeleton of T. gigantea Aldabra, the shell of which is about 123 centimetres long in 1 Mem. Soc. Geol. France : Paleontologie, vol. iv, Mem. 3 (1893) pi. [ii] xv, 182 DE. C. W. ANDREWS OX LOWEE MIOCENE [June 1914, a straight line. If this scapula belonged to Testudo crassa, itindicates that that species sometimes attained a much greater sizethan the type-specimen. The long diameter of the glenoid cavityof this specimen is about 9 centimetres, the same as in the scapulaof T. gigantea, above referred to. There are some fragments of a very massive shell, which probablybelonged to one of these gigantic individuals. Group Pleueodiea. This group is represented by an incomplete shell of a very youngindividual (fig. 3, below) of a species of Podocnemis from Bed 22at Kachuku. The specimen is imperfect peripherally, all the Fig. 3.—Shell of a species of Podocnemis from Bed 22 atKachuJcu, about three quarters of the natural size. A. A = Carapace. B = Plastron. marginals being lost. There are six neurals, of which the firstfive are hexagonal in outline, with the antero-lateral side short;the sixth is pentagonal, and its posterior angle projects between andpartly separates the inner ends of the sixth pair of costals ; whilethe seventh and eighth pairs of costals meet in the middle in the young of several species of Podocnemis, the neurals beara slight keel-like median ridge, most highly developed on thefourth and fifth. The form of the epidermal shields will be bestunderstood from the figure. Vol. 70.] YERTEHRATES FROM BRITISH EAST AFRICA. 183 The plastron (fig. 3, B) is incomplete, the anterior and posteriorends being broken away. The characteristic lateral niesoplastra() are well preserved. The left xiphiplastral {) hascome away from the matrix, and its impression shows that itsupper surface bore a roughened facet for union with the pub
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Keywords: ., bookcentury1800, bookdecade1840, bookidquarte, booksubjectgeology
