1 1 HAND-LIST OF 



Genus 4. TYXIS. 



1. Pyxis akw hxoides, Gray, Cat. p. 14; Sitpijrf. p. 13. 



a. Skeleton. Shell, -I. 1 , in. 

 Asia. Mas. Leyden. 61, 3, 20, 31. 



Genus 5. CHERSINA. 



1. CniKsiN.v axc.ulata, Gray, Cat. p. 12; Suppl. p. 13; Append. 

 p. G. Tortoises, etc., t. 19 (life). 



«. Adult animal. Shell worn, Ih in. 

 S. Africa. Presented by Dr. J. E. Gray. 



b, c. Animal and shell, 5£ in. 

 S. Africa. Presented by B. Brown, Esq. 



d. Shell of young, 4i in. 



S. Africa. Presented by Dr. J. E. Gray. 



e. Animal, half-grown, in spirits. 

 T. sculpta, Brandt. 



S. Africa. 50, 12, 12. 



/. Animal and shell. 

 S. Africa. 47, 3, 5, 18. 



g. Animal and shell, 6J in. ; stuffed. Sternum concave. Caudal 

 plate inflexed, convex. 

 S. Africa. 



li. Animal and shell, 6} in.; very dark. The sternum slightly 

 concave. Caudal plate inflexed. 

 S. Africa. 47, 3, 5, 16. 



i. Shell ; sternum slightly concave. Caudal plate inflexed. 

 S. Africa. 4G, 7, 5, 5. 



j. Shell, 4f in. Caudal plate slightly convex. Sternum slightly con- 

 cave. 

 S. Africa. 44, 2, 19, 2. 



k — n. 4 shells, different ages. 

 S. Africa. Mus. Utrecht. 67, 4, 2, 97, 3 , & 98 $ , 99, 100. 



n 1 . One small specimen, young, wanting front lobe of sternum. 

 S. Africa. 67, 4, 2, 99. 



o. Animal in spirit ; adult. 

 S. Africa. Mus. Utrecht. 66, 8, 14, 216. 



p. Animal in spirit ; smaller. 

 S. Africa, Mus. Utrecht. 66, 8, 14, 218. 



q. Skeleton. Sternum concave, caudal inflexed. 

 S. Africa. 9, 67, 4, 2, 52. 



r. Skeleton. Sternum flat, and caudal plate slightly convex. 

 S. Africa. 67, 4, 2, 132. 



