Bibliographical Notice. 533 



age of these beds is determined as Upper Trias. The fauna described 

 inckxdes Hyperodapedon IIi(A-lei/i, a species of Bdodon, Farasuchus 

 IJisJojn, a Dinosaur, a Mastodonsaurus, and some other forms. 

 Hyperodapedon, as originally described from Scotch specimens, had 

 a skull about 7 inches long and 5 inches wide ; but the new species 

 is estimated to have had the skull 20 inches long and a skeleton 

 fully 17 feet in length. The evidence for the existence of this 

 animal consists in bones of the skull, vertebrae, and bones of the 

 extremities. The most important remains are the palato-maxillary 

 bones, some of which are of about the size of those of Hypero- 

 dapedon Gordoni. 



But in the largest specimen the palatine teeth consist of three 

 main rows, with a few teeth indicating a fourth row. The first 

 row of maxillary teeth is regular in arrangement, but the external 

 rows are so irregular that the number of rows cannot be counted, 

 though it appears to be six. In all essential characters the resem- 

 blances of this type to Hatteria are remarkable. There are frag- 

 ments of mandible which also show characters like those of Hat- 

 teria^ and the worn condition of the teeth in mandible and skull 

 indicate a backward and forward motion of the jaw. The teeth 

 penetrate deeply into the bone ; those which border the palato- 

 maxillary groove of the skull were worn down by tlie marginal 

 rows of mandibular teeth, and the second and third rows of palatine 

 teeth were worn by the lateral mandibular teeth. 



The thoracic vertebrae show articular surfaces for the interver- 

 tebral w^edge-bones or interceutra, such as characterize Hatteria. 

 The neural arch, however, was not anchylosed to the centrum ; it 

 carried the dorsal half of the tubercle for the rib. 



Considering the large size of the animal, it is remarkable that 

 the correspondence to Hatteria should extend to the sacral vertebrae, 

 the shoulder-girdle, humerus, ulna, ilium, and other bones, -^hich 

 are provisionally referred to this genus on account of the resem- 

 blance to that type. 



Mr, Lydckker remarks that the presence of the median ridge in 

 the palato-maxillary bones of the remains from South Eewah may 

 perhaps indicate a distinct species from that found at Maleri. 



The Hiiperodapedon Huxleyi is distinguished from the British 

 species by its larger size and by having a greater number of rows 

 of teeth in the maxillary than in the palatine bone. This condition 

 is the reverse of that seen in Hyperodapedon Gordoni. Other dis- 

 tinctive characters are the triangular cross section of the teeth of 

 the first rows of the palatine and maxillary series, the absence of 

 teeth on the inner surface of the palatine bone, and a steady increase 

 in size of teeth from the front to the back of the jaws. 



The author considers that the characters of the fossils described 

 indicate a genetic connexion between the Khynchocephalia, through 

 Endothiodon, and the more typical Anomodontia. The well-deve- 

 loped articular ends of the limb-bones are taken to indicate that these 

 animals lived on land. 



The specimens referred to Behdon were found at Tiki, in South 



