264 SATJROPTERYGIA. 



situated near the commencement of the tail. The greater 

 part of the vertebral column is well shown, but some of 

 the anterior cervical s are absent, the dorsal region is 

 dislocated, the hinder part of the column overlapping the 

 anterior, and the greater portion of the caudal region lost. 

 The dorsal part of the left scapula is well shown. The 

 femur is preserved on either side, together with other 

 parts of the pelvic limbs. In size this specimen accords 

 closely with No. 2022*, and has the same relative pro- 

 portions between the tibia and femur. The skull is noticed 

 by Sollas in the ' Quart. Journ. Geol. Soc' vol. xxxvii. 

 p. 479. Hawkins Collection. 



It. 45. A split slab of rock showing part of the skeleton of a small 

 Plesiosaur not improbably belonging to this species ; from 

 the Lower Lias of Bennington, Leicestershire. Eeferred 

 to in Nichols's ' History of Leicestershire,' vol. i. p. ccv. 

 This specimen shows the middle portion of the dorsal 

 region ; fragments of the pectoral, and the greater portion 

 of the pelvic girdle ; the humerus of both sides ; and the 

 right femur. Although no decisive parts of the skeleton 

 remain, the resemblance of the humerus and femur to the 

 corresponding bones of the type is so close that there is a 

 great probability of the specific identity of the two speci- 

 mens. Presented by Major Harloive Turner, 1880. 



Plesiosaurus, sp. 



The undermentioned specimen differs from P. hawkinsi in its 

 rather larger dimensions, and the relatively taller spines of the 

 dorsal vertebrae, which exceed double the height of the centra. 



Hob. Europe (England). 



R. 1329. Slab showing part of a dislocated skeleton ; from the 

 Lower Lias of Street, near Glastonbury, Somersetshire. 

 Parts of the cervical and dorsal regions of the vertebral 

 column are shown, together with one humerus and the 

 ulna of either side. The humerus agrees in size with that 

 of the skeleton No. 2022* of P. haivkinsi, and the ulna is 

 of the short and broad type characteristic of that species. 

 The vertebrae are, however, larger than in that skeleton, 

 and the dorsals have relatively taller neural spines, al- 

 though exhibiting the same short centra, with distinctly 

 cupped terminal faces and a broad and low neural canal. 

 Hawkins Collection. Purchased, 1834. 



