SHIELD REPTILES. 65 



d. Animal and shell, 11$ in. Female. 

 Surinam. 



Var. 1. Forehead broad. Central longitudinal occipital ridge 

 very narrow. Perhaps adult. 



a. Animal stuffed. Adult. Shell, 9| in. First vertebral plate nearly 



square, last two vertebral plates keeled. 

 Hydraspis raniceps, Gray, Cat. p. 55, t. 23. 

 Brazils, Para. Bates. 



b. Skeleton and shell, 8J- in. First vertebral plate broader ; con- 



siderably broader in front than behind, last vertebral plates not 

 keeled. 

 Hydraspis raniceps, Gray, P. Z. S. 1864, fig., Cat. p. 73,/. 24. 

 Skull. 

 S. America. Mus. Paris. 



Var. 2. Forehead more convex. Central longitudinal occipital 

 ridge much broader. Perhaps young. 



c. Animal stuffed. Shell, 7f in. Concentrically striated. 

 Guiana. 71, 12, 13, 1. Presented by Governor Kawson. 



2. Hydraspis Gaudichaudii, Gray, Cat. Tort. B. M. p. 403 ; Cat. 



Sh. Bept. p. 57. 



a. Animal, in spirits, young. 



H. Gaudichaudii, Gray, Ann. d Mag. N. Hist. 1873. 

 Bahia, 69, 7, 2, 23. 



3. Hydraspis maculata, Gray. 



a. Animal, in spirits, young. 

 H. maculata, Gray, Ann. & Mag. N. Hist. 1873. 

 S. America. Mus. Utrecht. 66, 8, 14, 233. 



4. Hydraspis nasuta, Gray, Cat. p. 55. 



a. Animal, in spirits. 

 Hydraspis nasuta, " a," Gray, Cat. p. 55. 

 Tropical America. 



5. Hydraspis eicolor, Gray. 



a. Animal and shell, in spirits ; young. 

 Hydraspis bicolor, Gray, Ann. & Mag. Nat. Hist. 1873. 

 Demerara Falls. 72, 10, 16, 80. 



6. Hydraspis Gordoni, Gray, Cat. Suppl. p. 74. 



a. Animal stuffed. Shell 7 in. 

 H. Gordoni, Gray, P. Z. S. 1868, t. 42 (life). 

 Trinidad. Mts. Tamana. Zool. Soc. 69. 



7. Hydraspis depressa, Gray, Cat. p. 56 ; Suppl. p. 74. 



a. Animal, young, in spirits. Sternum with many small spots. 

 South America. Presented by Dr. Edward Buppell. 



K 



