304 Mr. Bell on the Box Tortoises. 



Spi'.ciEs 2. 



LoNQicAUDATUM. A'. Testit oblo7igd subtricarinata; s cutis dor- 

 sal/bus striate sulcatis ; inarginuUbus 25 ,* caudd elongatd 

 crassd. 



K. longicaudatum, Spix. Test, Nov. Braz, p. 17. tab. XII. 

 Habitat in Brazllii. 



Shell oblong, slightly tricarinated ; dorsal plates striated ; 

 marginal plates 25 ; tail long and tliick. 



This species is readily distinguished from the former by the 

 number of marginal plates, as well as by the much slighter degree 

 in which the shell is carinated. 



Species 3. 

 Brevicaudatum, K. Testa ovaia-subglobosd ; scutis dorsalibus 

 non striatis ; marginulibus 25 : caudd brevissimd, 

 K. brevicaudatum, Spix, Test, Nov, Braz, p. 18. tab. XIII. 

 Habitat in Brazili^. 



Shell ovate-subglobose j dorsal plates without striae, marginal 

 plates 25 : tail very short. 



These two species form part of the rich Zoological treasures, 

 which are the result of the labours of Mons. Spix in Brazil. 



Species 4. 



Pennsylvanicum. K, testa elliptlcd tcevi ; dorso planiusculo ; 

 scutis marginalibus 23. 



Testudo Pennsylvanica, Gmel, 1042. Schoepff^ p. 107. t. 24. 

 fig. A. 



Terrapene Pennsylvanica. Merrem^ p. 27. 



Cistuda Pennsylvanica. 5r/^, Journ. Jc, Sc, Phil. IV. p. 206. 



Habitat in Americi Septentrionali. 



Shell elliptical, smooth ; back flattened ; marginal plates 23. 

 The species, called by SchoepfF a variety of Testudo Pennsyl- 

 vanica^ with an immoveable sternum, is of course an Emys, 



