TBANSACTIONS OF SECTION C. 74d 



Plesiosaunis rostratus, Owen. 



By Teeth. 

 Termatosatmcs albertii, Plieninger. 

 JPlesiosaurus sp. non clet. of various 

 authors. 



By Vertebriv. 

 Termatomurus, Plesiosaurus ? Quen- 



stcdt. 

 Plesiosaurian vertebia3 of various 



authors. 



Termatosauriis crocodilinus, Quenstedt. 



Teeth similar to those described and figured by Quenstedt ' under the above 

 name, and not hitherto recognised as such in Britain, have been procured by the 

 writer from the Rhaetics of Aust Cliff, Westbury-on-Severn, and the Spinney Hills, 

 Leicester, and others have been recognised by liim in the collections in the British, 

 Bath, Bristol, Cardiff, Gloucester, and Leicester Museums, in the Museum of 

 Practical Geology, Jermyn Street, and some collected by Mr. "Wilson from Stanton- 

 on-the-Wolds. 



These recall the characters of an Ichthyosaurian tooth of the platyodont type, 

 and, indeed, are recorded by Mr. "Wilson- as Ichthyosaurus platyodon ; yet a close 

 comparison of the tooth with that of Ichthyosaurus, and with those of EhaeticLaby- 

 rinthodontia, leads to the conclusion that it is to the latter (sp. ind.) they must be 

 assigned. In this connection the writer, having probably a larger amount of such 

 material at his disposal than is elsewhere known, is convinced that teeth of various 

 species of SaurichtJii/s, Ag,,^ and other authors will have to be divided between the 

 Labyrinthodontia and various species of fishes, being, probably, called Saurichthys 

 erroneously. 



Ceratodus (? latissinms), Ag. 



In 1890 the writer found a small bone, which, having somewhat the texture and 

 appearance of a Ceratodus tooth, was labelled as probably pertaining to Ceratodus : 

 but on the second visit, in 1891, more and larger pieces were found of the same 

 nature, but which, having the appearance of plates of the ichthyic skull, were pro- 

 visionally referred to Ceratodus. One was shown to Mr. A. Smith "Woodward, 

 F.G.S., F.Z.S., who concurred in this opinion, at the same time calling attention to 

 a recent memoir upon the skull of a Ceratodus by F. Teller.* On comparison with 

 the description and plates, it now appears that some of these bones are the 

 median and other plates of the skull of Ceratodus ; and although, no doubt, they 

 have been collected before, and in one instance within the writer's knowledge 

 attributed to Mastodonsaurus jcegeri,^ a Labyrinthodont, yet this is the first instance 

 in which such specimens have been definitely referrred ; consequently this will 

 be a new record for the Rhastic of Britain. 



Some of the teeth of Ceratodus, collected in 1891 and 1892, are interesting as 

 having, in the case of the mandibular teeth, parts of the splenial attached, and 

 in the palatal teeth parts of the palato-pterygoid. 



9. Note on a Fault at Cinder Hill. 

 By George Fowlek, M.Inst.G.E., F.G.8. 



The underground observation of faults which are visible on the surface, and 

 are thus familiarly known, affords points of vantage for the elucidation of various 

 facts in connection with them, which mere surface examination cannot afford. It 

 has been the author's good fortune to trace below ground a series of ' faults,' of 



' Der Jura, p. 3.3, and atlas, tab. ii. 



2 ' The Ehsetics of Nottinghamshire,' Q. J. G. S., 1882, p. 454. 



^ Poissons Fossiles, vol. ii. pt. ii. (1843), p. 84. 



* Ucber den ScJiddel cines fosdleu Bijmoiirs, Ceratodus SturiinoY. ?^(C., aws den 

 ScTiicliten der oheren Trias der Nordalpcn (1891). 



' Incorrectly determined as either a British genus or species; sec lydekker. 

 Catalogue of Fossil Rejytilia and AmpMhia, vol. Iv. p. 142. 



