388 Geological Society :— 



2. " Note on a very large Saurian Humerus from the Kimnie- 

 ridge Clay of the Dorset coast." By J. W. Hulke, E.R.S., E.G.S. 



This stupendous limb-hone, 31 inches long, was obtained from 

 Kimmeridge Bay by J. C. Mansel, Esq. It had a subcylindrical 

 shaft, a transversely elongated proximal, and a cubical distal ex- 

 tremity. The distal end is mapped out by a wide shallow posterior 

 groove, and a narrower but deeper anterior notch, into a couple of 

 condyles, of which the inner or posterior is the larger. The anterior 

 border of the shaft towards the proximal end rises, as if to form a 

 deltoid crest. The cortical tissue of the shaft is remarkably dense 

 and polished. There is not any medullary cavity ; but the interior 

 of the cortex is filled with cancellous tissue. 



The author pointed out that the form of the terminal surfaces 

 removed the bone from all the Enaliosaurians, and brought it into 

 close relation to the humerus of existing Crocodilians, from which, 

 however, it differed in its being less curved and by its great size. 



He next referred to its differences from the humerus of the Di- 

 nosaurs Iguanodon and Hylceosaurus, and remarked that it most 

 nearly resembled the large limb-bone on which Mantell founded 

 his genus Pelorosaurus. 



3. " Note on some fossil remains of a Gavial-like Saurian from 

 Kimmeridge Bay, establishing its identity with Cuvier's ' Deuxieme 

 Gavial d'Honfleur ' and with Quenstedt's Ddkosaurus." By J."W. 

 Hulke, Esq., E.E.S., E.G.S. 



The fossils which formed the subject of this communication were 

 also collected by Mr. Mansel in Kimmeridge Bay. They demonstrated 

 the existence of a Saurian having long, subincurved, subretrocurved, 

 laterally compressed, unequally convex teeth, with an anterior and 

 a posterior finely serrated edge, loosely implanted in distinct and 

 separate sockets, and vertically replaced by young teeth rising into 

 the base of the large open pulp-cavity of the fang of the old tooth. 



The lower jaw, of which the greatest part of the right half is 

 preserved, is about 40 inches long. The symphysis is very long, and 

 includes the opercular bone. The upper jaw shows a terminal, undi- 

 vided nostril, not inflated laterally as in the Teleosaurus. The lines of 

 the jaws seem to merge into the cranium less abruptly than in the 

 living Gavial, which gives the outline of the head a greater resemblance 

 to Mecistops. The vertebras are biconcave, and the outer surface is 

 hollowed and somewhat overhung by the roundish articular surfaces. 

 The transverse processes are long and directed outwards, and slightly 

 backwards and downwards ; their posterior border thick, the anterior 

 thin. The ribs have bifurcated spinal ends. The femur, 14 inches 

 long, resembles that of the living Crocodilians, only it is less twisted. 



The structure of the jaw, the form and attachment of the teeth, 

 and the manner of their succession, with the form of the vertebras 

 and ribs, proved this Kimmeridge Saurian to be a Crocodilian (and 

 not a Lacertilian) resembling a bastard Gavial. The author next 

 demonstrated its identity with Dakosaurus, Qnenstedt, and hence 

 with Geosaurus maocimus, Plieninger; and he expressed a belief 

 that it was also generically identical with Cuvier's Honfleur Gavial 



