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543. An inferior marginal ossicle of the carapace of the Glyptodon clavipes. 



From the tertiary deposits of the Pampas of Buenos Ayres. 



Purchased. 



544. An inferior marginal ossicle of the carapace of the Glyptodon clavipes. 



From the tertiary deposits of the Pampas of Buenos Ayres. 



Purchased. 



545. An inferior marginal ossicle of the carapace of the Glyptodon clavipes. 



From the tertiary deposits of the Pampas of Buenos Ayres. 



Purchased. 



546. An anterior marginal ossicle, with two ossicles of the second, and two of 

 the third transverse rows in natural union ; the latter well show the cha- 

 racteristic expansion of the middle surface. 



From the tertiary deposits of the Pampas of Buenos Ayres. 



Purchased. 



54/. A marginal and four contiguous ossicles of the carapace of the Glyptodon 

 clavipes. 



From the tertiary deposits of the Pampas of Buenos Ayres. 



Purchased. 



548. A small portion of the carapace of the Glyptodon clavipes, including 

 seven of the component ossicles ; the sutures are very well displayed on 

 the internal surface, and two or three smaller ossicula may be here seen, 

 wedged like ' ossa wormiana' into the interspaces of the sutures. 



From the tertiary deposits of the Pampas of Buenos Ayres. 



Purchased. 



549. Various detached ossicles of the carapace of the Glyptodon clavipes. 



From the tertiary deposits of the Pampas of Buenos Ayres. 



Purchased. 



550. Various detached ossicles of the carapace of the Glyptodon clavipes. 



From the tertiary deposits of the Pampas of Buenos Ayres. 



Purchased. 



551. A portion of the carapace of the Glyptodon clavipes: it is from near the 



anterior part and includes five of the modified marginal ossicles. The 



