54 



CATALOGUE OF SHIELD REPTILES. 



bearded. Neck warty on the sides. Hind legs with a series 

 of three or four large compressed scales, forming a large 

 compressed lobe on the outer edge. Legs with large hex- 

 agonal scales in front. Toes strong, with a few broad shields 

 above, webbed. Claws 5 • 4, acute. Shell oblong, depressed, 

 flattened above, lateral margin revolute. Nuchal plate 

 distinct ; anterior vertebral plates broad, large. Sternum 

 solid, not mobile, rounded in front, deeply notched behmd. 

 Tropical America. 



Platemys, Wayler, Sijst. 135 (1835). 



Platemys, sp.. Bum. ^- Bib. Erp. G^n. ii. 407 ; Cat. MMh. 

 R. 20. 



Gray, Cat. Tort. B.M. 41. 



1. Platemys plamceps. The Doubly-keeled 

 Platemys. 



Shell quadrangular, fulvous, marked on each side of the 

 disk with a large black spot ; back with two rounded keels, 

 separated by a broad groove ; costal plates not arched ; 

 sternum black, yellow-edged ; margin yellow, with trian- 

 gular brown spots. Head covered with a thin single plate ; 

 crown yellow. 



Hydraspis plamceps,G/-a(/,5y«.i?e;j/.40; Caf.Tort.B.31.39. 

 Testudo planiceps seu platycephala, Schneid. Berl. Naturf. 



iv. t. 16. 



Sehoepf. Test. 115. t. 27. 

 Emvs planiceps, Schweig. Prod. 303. no. 16. 

 Platemvs planiceps, Wagler, Si/st. 135. 



Ftf^. St/sf. Rept. 29. 

 E. platycephala, Schlegel, Faun. Japon. 45. 

 Testudo Alartinella, Baud. Rept. viii. 344. 

 Platemys Martinella, Bum. i|- Bib. Erp. Gin. ii. 407; Cat. 



Mtth. R. 20. 

 Emys canaliculata, Spix, Bras. t. 8. f. 1, 2. 

 Platemys canaliculata, Wagler, Si/st. t. 4. f. I, 2, 3. 

 ? Emys discolor, Thnnb. MS. Schweig. 

 1 E. Schoepffii, Wiegmann. 



Hab. Brazils ; Cayenne ; Surinam. 



a. Adult (in spirits) ; lost part of the shields. Guiana. 



h. Adult (in spirits) ; lost many of the shields. British 

 Guiana. Mr. Schomburgk's Collection. 



c. Adult (stuffed). Rio Negro ; Brazils. Mr. Bates's 

 Collection. 



Osteology : — 



Platemys canaliculata, Wagler, Syst. t. 4. f. 4-26. 



M. Schlegel regards Emys nasuta, E. Geoffroyana, 

 Schweig., E. stenops, E. depressa, E. canaliculata, E. rufi- 

 pes, E. viridis, Spix, E. Maximilittna, E. radiolata, Mikan, 

 E. depressa, Neuwied, and E. pachyura, Boie, as all syno- 



nyms of this species ! Other naturalists regard them as 

 belonging to more than one genus. 



4. HYDRASPIS. 



Head moderate, flattened, covered with a thin skin, di- 

 vided into numerous subsymmetrical plates. Beaks naked, 

 slender, weak. Chin two-bearded. Hind legs with a com- 

 pressed scaly tubercle on the outer side, above the foot. 

 Toes webbed. Claws 5 • 4, acute. Shell oblong, depressed, 

 back flattish, lateral margin revolute. Nuchal plate di- 

 stinct, anterior vertebral plate larger than the other, often 

 very broad. Sternum solid, not mobile ; lobes broad, the 

 front one rounded. Tropical America. 



Hydraspis, sp., Bell, Zool. Journ. 



Hydraspis, Gray, Cat. Tort. B.M. 38 (1844). 



Platemys, sp., Bum. ^ Bib. Erp. Ghi. ii. 407 ; Cat. Mm. 



R. 20. 

 Rhinemys (part.), Wagler, Syst. 134 (1830). 



Fit^. Syst. Rept. 29. 

 Chelodina, sp., Fitzinger. 

 Phrvuops, Gray, Cat. Tort. B.M. 41. 

 ' Wagler, Syst. 135 (1830). 

 Fit:. Syst. Rept. 29. 



t Nee/c warty above. Lower part of the front of the 

 hind legs with a compressed wart formed of two large 

 compressed scales, with a group of five or six tin- 

 equal scales on the lower side beneath them. The 

 first vertebral plate ivider than the others. 



1. Hydraspis Spirii. The Grooved Hydraspis. 



Shell oval oblong, convex, middle of the back flattened, 

 with a narrow central groove ; costal plates arched ; ster- 

 num black. Head with numerous small plates ; chin two- 

 bearded ; neck with conical acute spines ; the two outer 

 toes of the fore-feet small, with short rudimentar)' claws ; 

 the lower part of the outer side of the front edge of the 

 hind legs with a compressed tubercle, formed of two com- 

 pressed scales. 



Hydraspis Spixii, Gray, Cat. Tort. B.M. 38. 



Platemvs Spixii, Bum. ^- Bib. Erp. Gen. ii. 409 ; Cat. 



MM. iJ. 20. 

 Emys depressa, Spix, Bras. 4. t. 3. f. 2 (not Neuwied). 

 Gray, Proc. Zool. Soc. 1855 ; Jtm. ij- Mag. N. H. 

 185,5, XV. 69. 

 Rhinemys nasuta, var., Wagler, Syst. 134. 



Hab. Brazil. 



a. Adult (in spirits). Brazils. From M. Clausen's Collec- 

 tion. 



