Cope.] 44:0 [Nov. 15, 



These families embrace the following genera. 



ELGINIID^. 

 This family includes but one genus, Elginia Newton. 

 Elginia Newton. 

 Philos. Trans. Roy. Soc. London, 1893, p. 489. 



Supraoccipital and tabular bones well developed on the superior sur- 

 face of the cranium, the latter produced into a horn. Teeth pleurodont, 

 crowns distinct from shafts, compressed, serrate. Posterior nares anterior. 

 Pterygoids divergent (Newton). 



The above characters are derived from Prof. Newton's description and 

 figures. His epiotic bone is my tabular, and his squamosal is my 

 supramastoid. It is probable that the superior border of the orbit is 

 formed by the frontal bone, which separates the postfrontals from the 

 prefrontals. The skeleton is unknown. Newton refers this genus to the 

 " Pariasauria. " 



Elginia mirabilis Newton, loc. cit., p. 473, PI. 37-40. 

 Elgin sandstones (Lower Trias?), Scotland. 



PARIASAURIDiE. 



Three genera are probably referable to this family, which differ as fol- 

 lows : 



Teeth on the vomer and palatine bones ; vertebrae shallowly biconcave. 



Pariasaurus Seeley. 



Vertebrae deeply biconcave Anthodon Owen. 



Palate toothless ; ? vertebrae Tapinocephalus Seeley. 



The above characters I derive chiefly from Seeley. 



Pariasaurus Seeley. 

 Philos. Trans. Roy. Soc. London, 1888, p. 95. Owen, Nomen Nudum ; 

 Foss. Rej)t. 8. Africa, Brit. Mus. 1876, p. 6. 



Pariasaurus serridens Owen, Foss. Reptilia South Africa Brit. Mus., 

 1876, p. 6, Pis. vi, vii, viii, Figs. 1, 2. Seelej^ 2'rans. Roy. Soe. 

 London, 1888, p. 70, PI. xvi. 

 Permo-Trias of South Africa. 



Pariasaurus bombidens Owen, I. c, p. 9, PI. viii, Fig. 3, Pis. ix, x, xii. 

 Seeley, Philos. Trans. Roy. Soc, 1888, p. 59, Pis. xii, xiii, xiv, xv ; 

 I c, 1892, p. 315, PI. XX. 

 Permo-Trias of South Africa. 



Pariasaurus bainii Seeley, Philos. Trans. Roy. Soc. London, 1892, 

 p. 322, Pis. xvii, xviii, xix. 

 Permo-Trias of South Africa. 



