290 MAE8UPIALIA. 



Genus STYLODON, Owen \ 



All the lower true molars are simply conical, have tall crowns, and 

 are separated from one another by short intervals ; while pmTi is 

 taller than mTT. 



Stylodon pusillus, Owen '-'. 



This is the type species. 

 Hob. Europe (England). 



All the following specimens are from the Middle Purbeck group of 

 Durdlestone Bay, Sivanage, Dorsetshire. 



47756. Fragment of a mandibular ramus, containing five true 

 (Fig.} molars. Figured by Owen in his ' Mesozoic Mammalia ' 



(Mon. Pal. Soc.), pi. ii. fig. 16. 



Beckles Collection. Purchased, 1876. 



47757. The greater part of the left ramus of the mandible, contain- 

 (Fig.) ing most of the teeth. Figured by Owen, op. cit. pi. ii. 



fig. 17. Same history. 



47758. The nearly entire mandible, with portions of the crushed 

 (Fig.) cranium. Figured by Owen, op. cit. pi. ii. fig. 18. 



Same history. 



47759. Part of the left ramus of the mandible containing several 

 (Fig.} cheek-teeth. Figured by Owen, op. cit. pi. ii. fig. 19. 



Same history. 



47760. Hinder part of the left ramus of the mandible, containing 

 (Fig.) the last eight cheek-teeth. Figured by Owen, op. cit. 



pi. iii. fig. 2. Same history. 



47761. Part of the left ramus of the mandible, containing j^T! and 

 (Fig.) the first six true molars. Figured by Owen, op. cit. 



pi. iii. fig. 3. Same history. 



Stylodon robustus, Owen". 



Distinguished from the preceding species by the deeper man- 

 dibular ramus, and a difference in the relative height of the lower 

 true molars. 



Hob. Europe (England). 



1 Geol. Mag. dec. i. vol. i. p. 199 (1866). 

 a Loc. cit. 

 Meoozoic Mammalia (Mon. Pal. Soc.), p. 52 (1871). 



