268 
THE GEOLOGIST. 
The great Dinosaurian lizards have not been met w ith higher than the 
Greensand beds, — unless a large undetermined bone in the Folkestone 
Town Collection, collected by the author, should prove to belong to some 
great Tguanodon. 
To these notes which we have made in the hope of drawing the atten- 
tion of collectors, at this genial season, and of gathering information of 
new or unrecorded specimens, in private cabinets and local museums, we 
may usefully add a record of the specimens in the British Museum. These 
are in the table-cases : — Femur of Triomjx from the Clialk of Eochester, 
collected by Mr. Bensted (and figured in ' Geologist,' Vol. V. p. 296) ; 
two large teeth of Folyptycliodon ?, with fragments of cellular bone, from 
the Grey Chalk of Dover? ; jaws, loose teeth, humerus, vertebrae, wing,' 
and bones of Pterodactyles,from Tipper Greensand of Cambridge ; and a por- 
tion of very large wing-bone of Pterodactyle, from the Gault of Folkestone ; 
beaks and other bones of Chelone altimentum, Chelone depressimentum, and 
possibly of other Chelonians, from the Upper Greensand of Cambridge ; very 
fragmentary tooth, without the enamel, of perhaps Pliosaurus ?, from the 
Lower Chalk of Sussex (Mantell Collection) ; teeth of species of Plesio- 
saurus, from the White Chalk of Southerham, Sussex, and the Wealden of 
Tilgate Forest ; teeth of Ichthyosaurus campylodon, from the Chalk of 
Islesham, and Lower Grey Chalk of Dover; also some from the Gault of 
Folkestone, and Upper Greensand of Cambridge, from which last deposit 
are also some worn vertebrae ; teeth of Polyptychodon intervuptus, from 
the Sussex White Chalk (Dixon Collection), the White Chalk of Rochester, 
Kent ; from Steyning, in Sussex (Mantell Collection) ; (? sp.) two specimens 
in hard chalk, from Kent (Taylor Collection) ; (? sp.) from the Folkestone 
Gault ; and numerous teeth from the Upper Greensand of Cambridge. 
From the Wealden, Suchosaurus cultridens, Owen, Tilgate Forest (Man- 
tell Collection) ; Goniopholis crassidens, Owen, Tilgate Forest, Sussex 
(Mantell Collection) ; Coinosaurus — ^jaw and isolated teeth of C. crassidens, 
Owen, from the Chalk of Washington, near Worthing (Dixon Coll.). In the 
Saurian wall-cases are line jaws with teeth and large vertebrae of Ichthyo- 
saurus campylodon, Carter, from the Grey Chalk of the Pound Down 
Tunnel, on the South-Eastern Railway, near Dover ; and teeth and verte- 
bras of Icthyosaurus campylodon ?, from the Cambridge Upper Greensand ; 
vertebrae of a Wealden Plesiosaurus in sandstone from Tilgate Forest 
(Mantell Coll.). 
Of Chelonians in the wall-cases are the fine remains of Chelone Ben- 
stedi, found in the Lower Chalk of Burham by Mr. Bensted, and given 
by him to Dr. Mantell, and some fragments from the Chalk of Lewes and 
Hochester ; numerous remains of Chelone MantelU, from the Wealden of 
Tilgate Forest (Mantell Coll.) ; and of Platemys Dixoni, Owen, from the 
same locality (Mantell Coll.). 
Of the Great Lacertians in the wall-cases are a fine fragment of upper and 
lower jaws, with teeth, of Mosasaiirus gracilis, Owen, from the Lower Chalk 
of Burham (Taylor Coll.) ; two vertebrae of the same species from the Up- 
per (?) Chalk of Lewes ; and isolated teeth of Mosasaurus (sp. ?) from the 
Norwich Chalk (Mantell Coll.) ; and the Egerton specimen of DoUchosau- 
rus longicollis, from the Grey (not Lower White) Chalk of Kent. 
We would here only add that the species of which, more than any other, 
it is particularly desirable to get further evidence, both as to its nature, 
size, and geological zone, is the Dolichosaurus longicollis, of the specimen 
of which in Mrs. Smith's collection we give a figure in Plate XIV. 
• S. J. Mackie. 
The Mixes of Tcscaiv r. — The working of mines in Tuscany dales from 
