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SIXTH REPORT— 1836. 



New Saurian, 



Lizards. 

 Locality. Type. 



Wealden. Concavo-convex, Ignanodon, 

 Maestricht. Concavo-convex, Mososaunis, 

 Monheim. Concavo-convex, Geosaurus, 

 Stonesfield j Superficially con- 1 Megalosaurus, 

 andlilgate. \ cave, J "^ 



Tilgate. SuperficiaUy con- 1 Hyteosaums, 



Thuringia. Doubtful, Monitor, 



Sauroid 

 FUhes. 



Crocodiles. 



Type. 

 Steneosaiinis, Concavo-convex, 

 Teleosaurus, Superf. concave, 

 Plesiosaurus, „ 



' Ichthyosaurus, Deeply concave, 

 Paleosaiu^is, „ 



Thecodontosau- 

 rus. 



Locality 

 Honfleur. 

 Caen. 

 Lyme. 

 Lyme. 

 Durdham 



The Rev. Mr. Clarke stated the existence of two springs on the 

 north side of Hales Bay (part of Poole Harbour), whose flow is constant, 

 and whose temperature is also constant, day and night, summer and 

 winter, at 51^ degrees of Fahrenheit. The line of junction of these 

 springs is parallel to the elevated vertical range of chalk which runs 

 through the Isles of Wight and Purbeck. 



Mr. BosGAWEN Ibbotson exhibited two models constructed by him- 

 self ; one of the Principality of Neufchatel, copied from the map of 

 Osterwald, and on the scale of \ an inch to the mile, and the other of 

 ■i a mile of the UnderclifF in the Isle of Wight, on the scale of 3 feet 

 to 1 mile. 



A letter from Dr. Mantell was read, accompanying Drawings by 

 Mr, Dinkel of various Reptilian Remains. 



A Drawing was exhibited by Mr. Murchison of a remarkably large 

 unknown Fish in the possession of the Rev. Mr. Noble from the Old 

 Red Sandstone of Clashbennie in Fifeshire ;* communicated by Mr. J. 

 Robinson, Sec. R.S.E. 



* A drawing of this fish hanng been foi-warded to M. Agassiz, he has named it 

 Holoptychns Nobilissitms, A figure and description of it will appear in Mr. Murclu- 

 son's new work. 



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