STTLODONTlDJi:. 291 



47762. Part of the left ramus of the mandible, showing all the 

 {Fig.) cheek-teeth ; from the Middle Purbeck group o£ Durdlestone 

 Baj^, Swanage, Dorsetshire. Pigured by Owen, in his 

 ' Mesozoic Mammalia' (Mon. Pal. Soc.), pi. iii. fig. 1. 



Becldes Collection. Purcliased^ 1876. 



Genus non det. {Incertce sedis.) 



The following specimens luere referred hy Owen to Stylodon pusillus. 

 All are from the Middle PurbecJc, Durdlestone Bay. 



47786. A small block of Purbeck limestone, containing a fragment 



of a mandibular ramus with teeth, together with part of a 

 right maxilla, with the last nine cheek-teeth. The asso- 

 ciation of these specimens is very strong evidence as to 

 their specific identity ; the teeth of the maxilla apparently 

 agree in structure with those of No. 47755, but seem of 

 rather smaller size. 



BecJcles Collection. Purchased, 1876. 



48403. A right maxilla, with the cheek-teeth agreeing in size with 

 No. 47786. Same history. 



47755. Part of a rather larger right maxilla, containing two 



(Fig.) incisors, the canine, and the cheek-teeth. Pigured by 



Owen, op. cit. pi. ii. fig. 14. Same history, 



48402. Part of a similar right maxiUa, containing pm. 4 and five 

 true molars. Same history. 



47787. Part of a jaw with teeth, perhaps generically identical with 



the preceding. 



Genus LEPTOCLADUS, Owen\ 



The hinder lower true molars are simply conical, but the most 

 anterior one ^ has antero-posterior cusps ; the cheek-teeth are sepa- 

 rated from one another by long intervals ; and pm. 4 is not taller 

 than m. 1. 



1 Mesozoic Mammalia (Mon, Pal. Soc), p. 53 (1871). The name was applied 

 merely as a provisional one ; but its right to distinction is confirmed by the 

 (MS.) observations of Osborn. 



^ Beckoned by Owen as a fifth premolar. 



u2 



