64 HAND-LIST OF 



Genus 2. HYDBOMEDUSA. 

 * Syd/romedMsa. 



1. Hydromedusa Maximiliani, Gray, Cat. p. 59 ; Swppl. p. 73 ; 



Ajppend. p. 19 ; Arm. <& Mag. Nat. Hist. 1873. 



a. Animal stuffed. Shell, 7i in. Sternum concave behind. 

 S. America. Buenoa Ayres. S. Miller. 48, 2, 3, 3. 



2. Hydromedusa platanensis. Gray, Arm, d Mag. N. Mist, 1873. 



a. Shell only, about 8| in. In very bad state, much broken, with- 

 out dorsal shields. 

 Hydromedusa MaximiUani, c, Gray, Cat. p. 69. 

 Hydromedusa platanensis. Gray, Ann. <f Mag. N. H. 1873. 

 Eio de la Plata. Bravard. ■ 59, 5, 16, 11. 



** CTielomedMsa. 



8. Hydromedusa flavilabris, Gray, Cat. p. 59 ; Siappl. p. 73 ; 

 Append, p. 19. Arm. i Mag. Nat. Hist. 1873. 



a. Animal, half-grown, in spirits, Shields nearly smooth, 

 H. MaximiHani, jun.. Gran/, Cat. Tort. B. M. p. 44. 

 Brazils. F. Clausen. 



6. Animal, in spirits ; young. Shields concentrically grooved. 

 Brazils. F. Clausen. 



e. Animal stuffed, and shell, 5^. Sternum flat. 

 Hydromedusa flavilabris, " c," Gray, Cat. p. 60. 

 Tropical America. Zool. Soc. 



d. Shell only, 2| in. 



Brazils. 59, 1, 31, 1. Fresented by Mrs. Miers. 



4. Hydromedusa depressa. Gray, Cat. p. 60 ; Suppl. p. 73 ; Arm. 

 d Mag. Nat. Hist. 1873. 



a. Animal and shell ; adult, in spirits. Some of the plates of the 

 back and sternum divided into a number of small roundish 

 shields. 



Hydromedusa depressa, Gray, Cat. p. 60, t. 26. 

 BrazUs. Brandt. 49, 11, 7, 29. 



Genus 3. HYDEASPIS. 



1. Hydraspis ranioeps, Gray, Cat. p. 65 ; Suppl. p. 7 ; Append. 

 p. 19. 



e. Animal and shell, 13 in. Male. 

 Surinam. 



