420 PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 7, 



1. On some Fossil Reptilian owe? Mammalian Remains /row? 

 the PuRBECKS, By Professor Owen, F.R.S., F.G.S. 



The fossil remains which form the subject of the following descrip- 

 tions were kindly transmitted for my examination by W. R. Brodie, 

 Esq., and Charles Willcox, Esq., of Swanage, by whom they were 

 discovered — the mammalian fossils exclusively by Mr. Brodie — in 

 certain members of the Purbeck formation at Durdlestone Bay, near 

 that town. 



I propose to commence vdth the reptilian fossils, and first vpitlx 

 those transmitted by Mr. Willcox, to whom I owe opportunities of 

 describing many rare and interesting remains from the rich locality 

 which he has so successfully explored. 



Class REPTILIA. 



nuthetes* destructor, owcu. 



The specimen (figs. 1, 2, 3, & 4) on which this genus and spe- 

 cies is founded is a portion of the left ramus of the lower jaw, with 

 seven more or less perfect teeth, of a Pleurodont Lizard, allied to the 



Figs. 1, 2, 3, & 4. — Part of the left ramus of the lower jaw, with 

 teeth, o/^NuTHETES destructor, Owen, 



Fig. 1. Fig. 2. 



/ 



Outside, nat. size. Inside, nat. size. 



Fig. 4. 



Fis. 3. 



End view, nat. size. 



Magnified view of two of the teeth (rf, c). 



Monitors of the modern genus Varanus. The length of the frag- 

 ment is 1^ inch ; the depth of the outer wall (fig. 1) is 6 lines, that 



* Abbreviated from vov9eTi]Tt]<;, monitor, in reference to the affinities of the 

 fossil to the modern lizards so called. 



