MASTODOXSAURID^. 153 



like those of Cajjitosaurus. Each cranial bone strongly pitted at 

 the centre, and radiately grooved at the periphery. Median plate 

 (interelavicle) of thoracic buckler with a rounded posterior extre- 

 mity and distinct lateral wings ; lateral plates (clavicles) meeting 

 in a long suture in advance of the median plate \ Dentition weak ; 

 teeth strongly fluted externally, especially at the base, with but 

 slight internal foldings 2 . 



Metoposaurus diagnosticus (Meyer 3 ). 



Syn. Metojnas diagnosticus (Meyer 4 ). 



Labyrinthodon diagnosticus, Owen 5 . 



The type and only described species. Skull attaining a length of 

 0,450. 



Hah. Europe (Germany). 



37938. The imperfect cranium; from the Middle Keuper (Upper 

 Trias) near Stuttgart, TTiirtemberg. The occiput is im- 

 perfect, and the extremity of the muzzle is wanting. 

 Both the frontal and palatal aspects are shown. This 

 specimen, which is mentioned in the ' Bep. Brit. Assoc' 

 for 1S7-J:, p. 157, is considerably smaller than the entire 

 skull figured by Eraas in the ' Pakeontographica,' vol. xxxvi. 

 pis. xii., xiii. The vomers are very clearly shown, and 

 have the teeth arranged as in Capitosaurus. 



HdberJein Collection. Purcliased, 1862. 



Ge^us non clet. 



The Eabyrinthodont represented by the undermentioned species 

 appears to be allied to Jletojjosaiirus and Cajritosaurus ; the asso- 

 ciated teeth represented in fig. 36 are, however, larger than those of 



Eis. 36. 



Labyrinthodont Jaiv. — From the Maleri stage of the Gondwanas of Central 

 India. \. (From the ' Palajontologia Indiea.') 



1 See E. Fraas, Palseontograpkica, vol. xxxvi. pi. xv. 



2 Ibid. p. 148. 3 Neuer Jahrb. 1S42, p. 302.— Netopia*. i Loc. cit. 

 5 Palaeontology, 2nd ed. p. 210 (1861). 



