MASTODONS ATJKID^ . 



Fiar. 31. 



143 



Mastodonsaurus giganteus. — Frontal aspect of the cranium, with the sculpture 

 omitted ; from the Lettenkohle (Lowest Keuper) of Wiirteruberg. About 

 \. iSOc, supraoccipital; Ep, epiotic; P, parietal; Sq, squamosal; S.T, supra- 

 temporal ; Q.J, quadratojugal ; Jit, jugal ; Pt, postfrontal ; Pt.O, postorbital ; 

 Fr, frontal ; Pr.F, prefrontal ; L, lachrymal ; Na, nasal ; Mx, maxilla ; the 

 premaxilla has no letter. {After Fraas.) 



Kar. 32. 



Mastodonsaurus giganteus. — Palatal aspect of the cranium ; from the Letten- 

 kohle of Wiirtemberg. About \. (After Miall.) 



