Zoology.] NATURAL HISTORY OF VICTORIA. [Reptilia. 



Dr. Gray's examples. There are certainly no barbels under the 

 chin of this tortoise. 



The small young agree with the large adults in all respects of 

 dorsal sulcus, rugosity of carapace, shape and colour, the only 

 difference being the less reflexion of the middle lateral edges of 

 the carapace. The only specimen I have of the C. sulcifera is 

 from the Goulburn, and is about the same size as the smallest 

 above measured, but has a very much wider carapace in proportion 

 to its length ( C. longicollis yVV, C. sulcifera yW), and it has no 

 dorsal sulcus, has radiating ridges on the plates of the carapace, 

 and concentric lines forming a broad margin round the sutures ; 

 the colouring is the same in both ; and whether they are distinct 

 species or varieties I am unable to satisfy myself without examining 

 more specimens of the C. sulcifera. 



Explanation of Figures. 



Plate 92. — Fig. 1, dorsal view of carapace, to show markings and dorsal sulcus. Fig. 2, 

 underside of another specimen in the attitude it assumes when turning from its hack to the 

 ordinary position, which it effects by pressing its beak against the ground. Fig. 3, diagram of 

 plates of the plastron. Fig. 4, diagram of plates of carapace. These plates are numbered to 

 agree with the description. 



Plate 93. — Fig. 1, average specimen, half natural size. Fig. 2, egg, natural size. 



Frederick McCoy. 



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