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PROCEEDINGS OF THE GEOLOGICAL SOCIETY. [June 7, 



of the leg in the present slab belonged must have been characterized 

 by unusually long and slender hind-legs. 



The scutes, as shown by their impressions on the matrix (fig. 5), 



Fig. 5. — Slab of stone from the "Feather Quarry'^ Purbeck, with 

 Cyclas and Planorbis, and containing fragments and impressions 

 of square reptilian scutes, and the tibia and fibula of a small 

 reptile (Nuthetes ?). A fish-scale also is seen in the middle of the 

 slab, lying against one of the scutes. Nat. size. 



were subquadrate, about 8 lines by 5 or 6 lines ; smooth on the in- 

 side ; impressed by minute circular pits on the outside ; and present- 

 ing more the character of the bony scutes of Crocodilia, than of those 

 of any of the modern Lizards that possess dermal bones. 



Macellodus Brodiei, Owen. 



Of the specimens discovered by W. R. Brodie, Esq., in the fresh- 

 water shelly "dirt-bed" of the Purbecks, at Durdlestone Bay, I pro- 

 pose first to describe those that are referable to the class Reptilia. 



The characters of the Lacertian order in this class are unequivocally 

 shown in the specimen, marked//, in Mr. Brodie's collection, and 

 represented in fig. 6, of the natural size in outline and magnified 

 in tint. It consists of a right superior maxillary bone, containing eight 

 nearly entire teeth, and showing tlie places of attachment of thirteen 

 or fourteen such teeth ; which teeth are anchylosed to the bottom of 

 an alveolar groove and to the side of an outer alveolar ridge. The 



