SHIELD EEPTILES. 61 



Var. Shell elongate, not or very indistinctly "keeled. 



b. Animal stuffed. Shell, 4i in. ; wanting dorsal plates. Not keeled. 



Sternum flat, entire behind. 

 Central America. 



c. Animal, dry. Shell elongate, 3§ in. ; without dorsal plates, not 



keeled. Sternum, flat, acute behind. 

 Kinosternon scorpoides, var. acuta, Gray, Syn. p. 14, t. vii. f. 1. 

 Central America. 



a. Shell, 4£ in. ; wanting dorsal plates. Not keeled. Sternum 

 entire behind. 

 Tropical America. 54, 10, 16, 59. 



i. Shell only, rather ventricose, 4| in. ; without any keels. Sternum 

 slightly convex, entire behind. 

 Tropical America. 45, 8, 18, 1. 



2. Swanka maculata, Gray, Cat. Suppl. p. 68. 



a. Animal and shell, in spirits ; adult. 

 Swanka maculata, Gray, I. c. p. 68. 



Guatemala, Vera Paz. Salvin. 64, 1, 26, 144. 



b. Animal and shell, in spirits; adult. 

 Guatemala. Salvin. 64, 1, 26, 145. 



d. e, f. Animals, in spirits. Sternum rounded behind. 

 Mexico, Salle. 62, 6, 6, 1. 



g. Skeleton and shell, 5J in. 

 Papalco, Apoia. Salle. 62, 6, 6, 4. 



3. Swanka fasciata, Gray, Cat. Suppl. p. 68. 



a. Animal, in spirits ; adult. 

 Swanka fasciata, Gray, I. c. 

 S. America. Brandt. 56, 2, 6, 1. 



Family 8. PLATYSTERNID^]. 

 Genus 1. PLATYSTERNON. 



1. Platystervon megacephalum, Gray, Cat. p. 49 ; Suppl. p. 70. 



a. Animal stuffed ; half-grown. Shell, 3i in. 

 P. megacephahun, Gray, Illustr. Ind. Zool. f. 



China. Presented by John Reeves, Esq. 



b. Animal stuffed ; adult. Shell, 5^ in. 

 China. Gardens Zool. Soc. 54, 3, 4, 3. 



c. Animal, dry. Shell, 4 in. 

 China. Swinhoe. 70,1,14,26. 



