The Inhabitants of the Aquarium 245 



The color, however, differs considerably 

 from that of the previous species. The 

 carapace is of a deep grayish black sym- 

 metrically marbled with a slightly lighter 



Fig. 104. Southern Soft-shelled Turtle, Trionyx fcrox. 



color. On older specimens the carapace 

 loses these markings and is of a uniform 

 grayish black color. Near the head a bor- 

 der of sharp granulations is visible. A 

 large number of fine line-like ridges run 



