ORDER CHELONIA. 11 



Some species, as the PyxiSi Bell, have the anterior 

 part of the buckler moveable^ like the box-tortoises ; 

 and others, KinixySi Id., can move the posterior 

 part of the carapace.* 



The Fresh-Water Tortoises. Emys. Brongn.t 



Have no other constant characters to distinguish 

 them from the preceding than more separated toes, 

 terminated by longer claws, and the intervals 

 occupied by membranes, though in this respect 

 there are gradations. Like the last subdivision, 

 they have five claws before, and four behind. The 

 form of their feet suits their aquatic habits. The 

 majority live on insects, small fish, &c. Their enve- 

 lope is generally more flattened than that of the 

 land tortoises. 



The Speckled Tortoise. Testudo Europcea. Schn. 

 Orbicularis, Linn. Schoepf. pi. i.l 



Is the most extended species. It has been observed 

 in all the south and east of Europe as far as Prussia. 



• See Mr. Bell's papers in The Linnsean Trans., Vol. XV., Second 

 Part, p. 392. In two of these Kmixi/i, which we have seen alive, the 

 edges of the juncture of the carapace were unequally worn ; and as it 

 were carious, so much so, that one might easily believe that there was 

 something morbid in this conformation. 



•j- From t^j.v;. (Tortoise.) 



X It is the same as la vertc ctjaune, Lacep. pi. 6 ; and his Ronde, pi. 5. 

 On this species, the excellent monograph of M. Bojanus, Vilna, 1819, in 

 folio, ought to be consulted. 



