T E S T IJ D C U L B E R T S O N I I. 569 



The gular scutes are convex posteriorly, and do not encroach upon the position 



of the entosternal pLate. i, + ii 



The humeral scutes internally average seven and a half lines long, but externally 

 expand before and behind, and join the axillary scutes and the fourth, fifth, and 

 sixth marginal scutes. The abdominal scutes are three inches long, and join the 

 sixth and seventh marginal and the inguinal scutes. 



ADMEASUREMENTS. 



Iii(h.-8. Lines. 



10 



Length of stenuun at middle line, . . • • 



Breadth " at po.sterior margin of hyosternals, . < 



Estimated lontrth of antero-po.sterior curve of the carapace. . 1'> <> 



Height, 



TESTUDO CULBERTSONU. Ar/r///. 



(Tab. xii.) 



Emys Ciilbertsonii : Pr. Acad. Nat. Sci., vol. vi., p. -U. 

 Ti;studo (Iiilbertsonii : lb. p. 59. 



This species is established upon a nearly entire carapace and plastron, a little 

 crushed out of its original form upon one side. It is much larger than Testudo Oweni, 

 and is relatively less convex and high in comparison to its length and breadth. 



The marginal plates laterally are vertically convex. 



The sternum is concave, indicating a female individual, and the axillary and 

 inguinal notches are directed downwards. 



The carapace in the specimen has eleven vertebral plates. 



The first vertebral plate is two and a quarter inches long and one and a half 



inches broad. 



The second vertebral plate is octohedral, with alternately long concave and short 

 straight sides, and articulates laterally with the first, second, and third pairs of 

 costal plates. 



The third vertebral plate is quadrilateral, and articulates laterally with only the 

 third pair of costal plates. The arrangement of the two last described vertebral 

 plates is very similar in the recent Gophir. 



The other vertebral plates to the eighth inclusive are hexahedral. The ninth 

 vertebral plate is quadrate, and is an accessory to the usual number introduced 

 between the eighth and the penultimate, or inverted V-shaped plate. 



The second and third vertebral scutes are broader than long, quadrilateral, with 

 the lateral margins bow-shaped. The fourth vertebral scute is considerably longer 

 than broad, and the fifth is prolonged at its anterior part to join the former. 



The entosternal plate is pyriform, and is a little broader than long. 



The hyosternal plates are over five inches long, and articulate with the third to 

 the angle inclusive of the sixth marginal plates. 



The hyposternals are four inches long, and articulate with the sixth and seventh 

 marginal plates. 



