SHIELD REPTILES. 65 



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

 Surinam. 



Var. I. Forehead hroad. Central longitudinal occipital ridge 

 very na/rrow. Perhaps adiM. 



' 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. 



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

 siderably broader in front than behind, last vertebral plates not 

 keeled. 



Hydraspis raniceps, Cray, P. 2. 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, 7| in. Concentrically striated. 

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



2. Hydraspis GAumcHAunn, Cray, Cat. Tort. B. M. p. 403 ; Cat. 



Sh. Bept. p. 57. 



a. Animal, in spirits, young. 



H. Gaudichaudii, Gray, Ann. <& Mag. N. Hist. 1873. 

 Bahia. 69, 7, 2, 23. 



3. Hydraspis maculata, Cray. 



a. Animal, in spirits, young. 

 H. maculata, Qra/y, Ann. S Mag. N. Hist. 1873. 

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



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



a. Animal, in spirits. 

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

 Tropical America. 



5. Hydraspis bicolor. Gray. 



a. Animal and shell, in spirits ; young. 

 Hydraspis bicolor, Gray, Arm,. S 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. 8. 1868, t. 42 (life). 

 Trinidad. Mts. Tamana. Zool. Soo. '69. 



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



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

 South America. Presented by Dr. Edward Eiippell. 



E 



