294 Dr. J. E. Gray on Chelonians. 



flexed caudal has a flatter sternum and narrower postgular and 

 anal plates. 



The very fine specimen with the animal, said to have come 

 from the river Murray, Australia, seems to be intermediate 

 between them. The sternum is quite flat, truncated before and 

 behind ; the hinder lobe is rather broad, being, as in the smaller 

 specimen, half as broad at the end as the hinder edge of the 

 preanal plates with the convex inflexed caudal shields. 



Cistudo Carolina. 



Nuchal plate generally well developed. In one specimen {f) 

 in the British Museum it is longitudinally divided into two 

 plates and very short, as is also the margin of the marginal 

 plate next to it ; in another [k) the nuchal plate is entirely 

 wanting. 



In most the sternum is more or less black or brown ; iny it 

 is very irregularly spotted and striped with yellow. In many 

 shells the keel of the vertebral plates is yellow. 



A specimen {I) from Louisiana is much paler, with the 

 margin more reflexcd and produced. The animal has a pale 

 streak from the hinder edge of the beak, over the ear, along 

 the side of the neck. It is called the " Woodland or Canebrake 

 Tortoise." 



Cistoclemmys Jlavomarginata. 



The shell black, with a red vertebral streak, the discal and 

 upperside of marginal plates with a red spot ; underside of 

 marginal plates yellow. Head with a narrow streak on the 

 side, from the back edge of the orbit, which is dilated into a 

 blotch behind. 



This species is most distinct from Cuora trifasciata, with 

 which it has been proposed to be united wlien only examined 

 in spirits. It is one of the most beautiful Box Tortoises. 



This animal is most distinct from all tlie varieties of C. am- 

 hoinensis by the streak on the back of the head commencing 

 at the back angle of the eye, narrowed in front and gradually 

 widening behind ; whereas the streak of Cuora amboinensis 

 begins at the nostrils and is continued over the eye, along the 

 sides of the neck, and is nearly of the same width throughout, 

 or only a little wider behind. 



Dr. Gilnther has arranged this species with Cuora ; but the 

 toes are shorter and much less webbed than in that genus, 

 which has a very distinct web fringed on the margin. 



Cuora amboinensis. 

 The alveolar processes of the upper jaw narrow, Avith a sharp 



