1869.] HUXLEY NEW LABYKINTHODONT. 309 



land we also meet with the true T. diphyoides in rocks of Cretaceous 

 age ; a description and figures of it will be found in W. A. Ooster's 

 * Synopsis des Brachiopodes des Alpes Suisses/ p. 19, pi. v. figs. 1-4, 

 1863. I have seen the specimen of T. viator, which M. Coquand 

 assures me he found in Africa in rocks of Jurassic age(?), and 

 likewise others obtained by MM. de Yerneuil and Favre in Spain. 

 The Diphyiod shells were at one time considered to be rare fossils ; 

 but within the last few years they have been discovered in many 

 locahties, although never hitherto in Great Britain. 



Discussion. 

 Mr. J. W. JuDD thought that the break usually existing between 

 the Neocomian and Jurassic beds indicated a long interval of time, 

 and that certain deposits in the Carpathians and elsewhere had been 

 rightly referred to this intermediate period. Possibly, therefore, 

 the Diphyoid Terebratulce, commencing in the Jurassic, lived on 

 through the Tithonian into the Neocomian period. 



5. On a new Labteinthodont /rom Beadford. 

 By T. H. Huxley, LL.D. P.E-.S., President of the Geological Society. 



(Plate XI.) 



The specimen which Mr. Miall has been so good as to send for my 

 examination is without doubt a Labyrinthodont Amphibian. This is 

 proved by the character of the vertebrae, of the ribs, and of the 

 ventral armour. But the state of the fossil is such that it is not 

 easy to discover points in which it can be strictly compared with 

 those forms of Labyrinthodonts which are already known. 



For example, nothing remains of the skull but some fragments 

 of the upper and lower jaws. The piece of bone which represents 

 the right upper jaw is 7 inches long, and has, like a fragment 

 of the left upper jaw which lies below it, a pitted sculpture. A part 

 of the right ramus of the mandible, with its symphysial end entire, 

 is about 6 inches long, and about half an inch deep at the sym- 

 physis. Both upper and lower jaws bear close-set, even-sized 

 teeth, nearly circular in section and somewhat recurved at their 

 apices, which are rather obtusely pointed. Parallel longitudinal 

 folds are indicated upon the basal halves of some of these teeth, the 

 largest of which is not more than 0*5 in. long, by 0*15 in. thick at 

 the base (PI. XI. fig. 1). An impression of a conical acutely 

 pointed tooth, much larger than any of these (seeing that it must 

 have had a length of nearly an inch when it was entire), is seen 

 upon the matrix, 2 inches below the ramus of the mandible. 



These features of the fossil prove sufficiently that it is not Anthra- 

 cosaurus, but leave open the question of its identity with other Coal- 

 measure Labyrinthodonts, and especially with Pholidogaster, the only 

 fragments of the teeth which are preserved, in the latter genus, being 

 not unlike those of the present specimen. 



Impressions of some four or five and twenty vertebrae are dis- 



