200 



CHELONIA. 



minal and femoral shields ascending much less than in P. hanno- 

 verana, the postinguinal lobe short and rounded, and the anal shields 

 extending on to the hypoplastrals. The vertebral shields do not 

 reach quite half across the costals, and the fluting of the underlying 

 areas is strongly marked. 

 Hob. Europe (England). 



Fig. 44. 



Plesiochelys valdensis. — The imperfect carapace ; from the Wealden of the Isle of 

 Wight. ^. mi' nuchal bone ; n 1-n 7, neural bones ; c \-c 7, costal bones. 



28967. The somewhat imperfect shell : from the Wealden of the 

 {Fig.) Isle of Wight. The type specimen (fig. 44). Noticed by 

 G. A. Boulenger and the present writer in the ' Geol. Mag.' 

 dec. hi, vol. iv. p. 272, and provisionally referred to P. 

 sanctce-vcrence, and also by the present writer in the ' Quart. 

 Journ. Geol. Soc.' vol. xlv. p. 238 (as No. 28976). The 

 whole of the marginals are wanting, and the edges of the 

 costals and plastron have been somewhat waterworn. 

 The width of the second vertebral shield is equal to the 

 length of that shield plus rather more than half that of 

 the third vertebral, whereas in the type of P. sanctce- 

 verence the former diameter is relatively greater when 

 compared with the length of the corresponding shields. 



Hastings Collection. Purchased, 1855. 



