CHELYDRID^. 



139 



and the present writer, op. tit. p. 275. It comprises the 

 whole of the right and part of the left epiplastral, and 

 shoAvs the whole contour of the intcrgular and gular 

 shields, together with the upper part of the pectoral ; it 



Fig. 33. 



Tretosfcrnum bakewelli. — The right side of the anterior extremity of the plas- 

 tron ; from the Wealden. ig, intergular shield ; g, gular do. ; pec, pectoral 

 do. ; ab, abdominal do. ; entp, space for entoplastral bone. The suture 

 between the epi- and hyoplastral is shown to the left of entp. Eeduced. 



is figured in the accompanying woodcut in connection 

 with the next specimen. There is no humeral shield. 



Mantell Collection. 



2276. The imperfect right hyoplastral apparently belonging to the 



'ig.) same individual as the preceding specimen ; from Cuck- 

 field. Figured in the accompanying woodcut in connec- 

 tion with the latter. The vermiculated character of the 

 sculpture, especially on the lower half, is well shown. 



Mantell Collection. 



R. 658. The imperfect left hyoplastral; from the Lower Wealden 

 (Tilgate Grit) of Battle, Sussex. This specimen has lost 

 the anterior extremity, but shows the median suture and 

 the commencement of the incision for the entoplastral, as 

 well as part of the sulcus formed by the division between 

 the gular and pectoral shields. The vermiculated nature 

 of the sculpture is very clearly shown, and clearly distin- 

 guishes the specimen from the hyoplastrals of T. punc- 

 tatum. Presented by J. E. Lee, Esq., -1884. 



