CHELONID^. 63 



36199. A split nodule showing the under surface of the imperfect 

 carapace of a smaller immature individual, and a cast of 

 the same; from Harwich. Noticed by Owen, op. cit. 

 p. 29. One hyoplastral is shown. Bell Collection. 



37719. A split nodule exhibiting the inner surface of a small 



imperfect carapace and a cast of the same ; from Harwich. 



Saul Collection. Purchased, 1863. 



R. 1481. The imperfect shell of a young individual apparently 

 belonging to this species ; from the London Clay of 

 Sheppey. This specimen agrees precisely with the larger 

 carapace of No. R. 918 in respect to the neural bones ; it 

 has the vertebral shields considerably wider than in 

 individuals of L. longiceps of the same dimensions, and 

 is in all probability identical with the Chelone latiscutata 

 of Owen. The imperfect ossification of the plastron is 

 indicative of immaturity. This specimen is evidently 

 specifically the same as the following. No history. 



28853. A smaller imperfect young shell; from Sheppey. The 

 carapace is very imperfect, but shows the wide vertebral 

 shields characteristic of the preceding specimen. The 

 impression of the ribs shows the stoutness of these bones ; 

 there is a minute ninth costal. The general characters of 

 the carapace are very similar to those of No. R. 912. 

 The plastron is nearly entire, but is very imperfectly 

 ossified. The form of the xiphiplastrals is nearly the 

 same as in the larger specimen figured by Owen, op. cit. 

 pi. xiii. Several limb-bones are preserved, among which 

 are the right humerus, a femur, and a terminal phalangeal. 

 The latter is curved and rounded. Purchased, 1854. 



49466. Fragment of the carapace of a young Chelonian referred by 

 (Pig.) Owen to the present species. Figured by Konig in his 

 4 Icones Foss. Sectiles/ pi. xvi. fig. 192, as Testuclo plana, 

 of which it is the type. Noticed by Owen in his ' Reptilia 

 of the London Clay, &c.' pt. i. p. 29. Only the inner 

 surface is dispbyed. and the specimen appears to be 

 insufficient for specific determination. No history. 



1603. Slab exhibiting one lateral aspect of a nearly entire right 



(Fig.) femur probably referable either to this or the following 



species; from the London Clay of Harwich. Figured by 



