59 



Length of first vertebral plate along median 



line ... 

 Greatest width, of same in front, about* 

 Width of same behind ... 

 Length of second vertebral plate 

 Greatest width of same 

 Length of third vertebral plate 

 Greatest -width of same 

 Length of fourth vertebral platef 

 Greatest width of same 

 Length of fifth vertebral plate 

 Width of same in front... 

 Greatest -width of same behind 

 Length of in tragular plate 

 Greatest width of same 

 Length of interpectoral suture... 

 Length of outer edge of each gular plate 



„ „ humeral plate.. 



„ „ pectoral plate .. 



„ ,, abdominal j)late 



„ ,, femoral plate 



,, ,, anal plate 



Width of plastron across ends of posterior 



outer angles of humeral plates ... 

 Width of plastron across posterior fifth of 



pectoral plates 

 Width of plastron across middle of femoral 



plates 

 Width of plastron across tips of caudal plates 

 Distance between tip of caudal plate and 



nearest point of caraj)ace ... 

 The description is taken from a single example 

 the shields alone have been preserved — in the collection of the 

 Australian Museum, Sydney, collected in the year 1869 at 

 Cape York, Q., by Mr. J. A. Thorpe. 



2-25 



2-85 

 1-20 

 2 25 

 2-00 

 1-50 

 1-90 

 1-75 

 1-40 

 1-Q5 

 0-55 

 1-90 

 2-25 

 l-2o 

 1-55 

 1-20 

 1-60 

 1-80 

 1-45 

 2-00 

 1-35 



3-50 



3-70 



3-70 

 1-40 



1-10 

 -of which 



* Owing to the fracture mentioned in a preceding note (p. 57), it is 

 impossible to give this measurement with perfect accuracy, but by 

 measuring the length of the suture with the normal anterior margino- 

 brachial, and then measuring the same distance along the fractured 

 plates from the inner posterior angle of the margino-nuchal, the distance 

 between the two points thus obtained should be the greatest width, or 

 closely approximate thereto. 



fin measuring the length of the fourth vertebral plate we have 

 included the small posterior intercalated plate (see note p. 57), believing 

 it to be an accidental fracture from this rather than from the succeeding 

 plate. 



