SUPPLEMENT. 



269 



correctly determined, and if (as is the case in the type species) large 

 teeth are invariably wanting in Ophthalmosaurus, then the present 

 form will be specifically distinct. 



It is probable that the specimens Nos. 46491, 46473, 46407, 

 47885, and 46474 {supra, ii. pp. 10, 11) are referable to this 

 species. 



Hob. Europe (England). 



R. 1712. Cast of the left humerus. The original, which is the 

 type, was obtained from the Kimeridge Clay of Gilling- 

 ham, Dorsetshire, in association with other bones, and is 

 preserved in the Museum of Dorset. It is figured in the 

 woodcut on p. 268. A smaller propodial found with this 

 bone is believed to be the humerus of an Ichthyosaurus, 

 to which some large teeth also found at the same spot 

 probably belong. Made in the Museum, 1889. 



R. 1712 a. Cast of the centrum of one of the hindmost cervical 

 vertebrae. The original (fig. 64), together with a number 

 of other vertebrae, was found in association with the type 



Pig. 64. 



Ophthalmosaurus jplcydellL — Anterior and left lateral aspects of a cervical ver- 

 tebra ; from the Kimeridge Clay of Gillingham. 4 nat. size, a, upper ; 

 b, lower costal facet. 



humerus, and is figured in the accompanying woodcut. 

 The dimensions are, length 0,038 (10 5 inches), height 

 0,057 (2-25 inches), width (posterior face) 0,071 (2-8 

 inches). Made in the Museum, 1889. 



