ROOM III. SYNOPSIS OP CONTENTS. 143 



Two enormous coracoids, a femur, and part of a clavicle of 

 the Megalosaurus, have lately been discovered at Stonesfield, 

 and added to the Museum collection : these are at present in 

 Room IT. Wall-case G. 



In the following cases commences the matchless collection 

 of British Enaliosaurians, or Marine Reptiles, chiefly of the 

 genera Plesiosaurus, and Ichthyosaurus, from the Lias of 

 Dorsetshire, Somersetshire, and Gloucestershire, collected by 

 Thomas Hawkins, Esq. F. G. S. 



D. [4.] A beautiful Plesiosaurus HawTcinsii, and a cast 

 of the same. 



Plesiosaurus dolichodeirus. (Long-necked the neck being 

 equal in length to the body and tail united.) On the top of 

 this case is the original specimen of this species, described by 

 Rev. W. D. Conybeare in 1822. (See " Geol. Trans." second 

 series, vol. i. PL XVIII.) 



E. [o.J On the left, Plesiosaurus macrocephalus, presented 

 by the Earl of Enniskillen. 



Plesiosaurus rugosus, from the Lias near Belvoir Castle ; a 

 nearly entire specimen of this rare species ; presented by the 

 Duke of Rutland. 



F. [6.] In the upper division, Plesiosaurus Hawkinsii. 

 Below are exquisite specimens of the same species, and part 

 of a Plesiosaurus dolichodeirus. 



Above Case A, are remains of large fossil Turtles. 



0. Portions of the skeleton of a gigantic marine 

 reptile (Polijptychodon), from the Green- 

 sand of Hythe, in Kent, presented by 

 H. B. Mackeson, Esq. 



D. The original specimen of Plesiosaurus doli- 

 chodeirus. 



E. A specimen of Plesiosaurus arcuatus. 



G. [7.] Remains of Mammalia, Birds, and Reptiles, from 

 the Eocene lacustrine deposits, near Clermont, in Auvergne. 

 This most valuable collection is not yet arranged ; it com- 

 prises many species and genera of pachyderms allied to the 

 Anoplotheria ; rodents, carnivora, marsupials, ruminants, and 

 saurian and batrachian reptiles. There are several fossil egg- 

 shells, either of birds or reptiles. 



H. [8.] Bones, teeth, <kc. of Ruminants and Pachyderms, 

 from the Diluvium or Drift. (Unarranged.) 



