220 CHELONrA. 



3506. The imperfect left hypo- and xiphiplastral; from Cuckfield. 



{Fig.) One of the types ; fignred by the writer, op. tit. p. 511, 

 fig. 1 ; reproduced in fig. 50, B. The proximal portion of 

 the hypoplastral, which is presumed to have formed the 

 inguinal notch and buttress, is broken away. Portions of 

 the areas occupied by the abdominal, femoral, anal, inter- 

 abdominal, and interfemoral shields are shown. 



Mantell Collection. 



3529. An imperfect bone, provisionally regarded as a portion of the 

 left mesoplastral of this form ; from Cuckfield. This spe- 

 cimen shows a portion of the axillary buttress and parts 

 of the areas covered by one median and two lateral shields. 



Mantell Collection. 



43826 x. A marginal bone, not improbably referable to this form % 

 from Cuckfield. This specimen would agree in relative 

 size with the plastron. Purchased, 1859. 



The following genera are far too imperfectly known to admit of 

 any definite opinion being formed as to their serial position or affi- 

 nities, the second one being apparently extremely aberrant. 



Genus PROTO CHELYS, Lydekker (n. gen.). 



A provisional genus, known by the impressions of the horny 

 shields of the carapace, and probably by part of the pectoral girdle. 

 The vertebral shields are of great relative width and markedly cari- 

 nated. In these respects they approximate to those of the exist- 

 ing Geoemyda, and indicate that the neural bones of the carapace 

 were likewise strongly carinated. The coracoid, which probably 

 belongs to this form, is of the expanded type found in Chelys and 

 Pleurostemum. 



Protochelys stricklandi (Phillips 1 ). 

 Syn. Testudo stricklandi, Phillips 2 . 

 ? Chelys (?) blakei, Mackie 3 . 



The type species ; probably with a shell of about 10 inches in 

 length. If the undermentioned coracoid belong to this form, the 

 specific name blaJcei should be adopted. 



Hab. Europe (England). 



i Geology of Oxford, p. 182 (1871).— Testudo. 

 2 Loc. cit. 3 Geologist, 1863, p. 41. 



