MAST0D0KTSAURID2E. 145 



pp. 78, 79. The characteristic diminution in the thickness 

 of the dorsal half of the centrum is well exhibited. 



Par chased, 1848. 



33093. Fragments of ribs ; from the Lettenkohle of Gaildorf. 



Purchased, 1848. 



Mastodonsaurus granulosus, E. Eraas \ 



Imperfectly known, but readily distinguished by the finely pitted 

 sculpture of the cranial bones and thoracic buckler. 

 Hab. Europe (Germany). 



33075. Eive imperfect sculptured bones ; from the Upper Muschel- 

 kalk bone-bed (Middle Trias) of Crailsheim, Wiirtemberg. 

 The sculpture agrees precisely with that of the type speci- 

 mens from the same locality figured by Eraas in the 

 4 Palaeontographica,' vol. xxxvi. pi. vi. figs. 1, 2. 



Purchased, 1848. 



Mastodonsaurus keuperinus, E. Eraas 2 . 



Imperfectly known. Nearly. or quite as large as M. giganteus, 

 from which it is readily distinguished by the larger size and greater 

 relative width of the posterior nares (choanae). 



Hab. Europe (Germany). 



15270. Slab of sandstone exhibiting the external surface of the left 

 lateral thoracic plate probably belonging to this species ; 

 from the Middle Keuper Sandstone (Upper Trias) of Eeuer- 

 bach-Haide, near Stuttgart, Wiirtemberg. In its pitted 

 structure this specimen differs from the thoracic plates re- 

 ferred to Capitosaurus, and resembles the larger left lateral 

 plate of M. giganteus figured by Meyer and Plieninger in 

 their * Beitr. Pal. Wiirttembergs,' pi. iv. figs. 1, 2. 



Purchased. 



Mastodonsaurus indicus, Lydekker (n. sp.). 



Known only by a fragment of the thoracic buckler, which indi- 

 cates a form fully as large as M. giganteus. Definite specific charac- 

 ters cannot at present be given. 



Hab. India. 



R. 596. Cast of a considerable portion of the right lateral plate 



1 Palaeontographica, vol. xxxvi. art. i. p. 94 (1889). 



2 Ibid. p. 116. 



PART IV. L 



