142 



TESTUDINIDJE. 



carapace curved ; anterior marginals much longer than the posterior ; 

 no miclial shield; discal shields concentrically grooved; vertebral 

 sliields broader than the costals, fifth usually broader than the others. 

 Plastron with very thick anterior lip, notched in front and pro- 

 jecting beyond the anterior border of the carapace ; the length of the 

 thickened anterior lip equals about one fourth of the length of the 

 plastron in the female, more in the male ; hind lobe of plastron 

 very short, truncate, its length about half the width of the bridge ; 



Fig. 41 . 



Shell of Ciiiixys erosa. 



the longest median suture is between the abdominal shields, which 

 equals twice to thrice that between the jiectorals : the smallest 

 plastral shields are the anals ; inguinal large, axillary small. 

 Carapace dark brown, centre of shields lighter ; outer side of costal 

 shields yellowish ; plastral shields dark brown in the centre, 

 yellowish all round. 



Length of shell 23 centim. 



Guinea, Gaboon. 



