CATALOGUE OF SHIELD REPTILES. 



59 



3. Chelodina Colliei. Collie's Chelodine. 



Shell oblong, elongate, narrowed, revolute and contracted 

 on the sides, dilated and bent up behind over the hind legs. 

 Pale brown, varied and rayed with bright brown. Sternum 

 narrow, keeled on the sides. 

 Chelodina Colliei, Gray, Proc. Zool. Soc. 1855. 



Hab. Swan River (^. Collie, Esq.). 



a, b. Adult (stuffed). Swan River. From Haslar Hos- 

 pital. 



e. Very young (in spirits). Body scarcely larger than the 

 head. Swan River. Presented by Sir John Richard- 

 son, M.D. 



** Shields hard, horny, rugose. 



4. Chelodina sulcifera. The Grooved Chelodine. 

 Tab. XXV. fig. 2. 



Shell oblong, rather depressed, dark brown ; plates thin, 

 concentrically grooved ; vertebral plates convex, longer than 

 broad; areola small, posterior; the sides rather reflexed, 

 and rather dilated and bent up behind over the hind legs. 

 Sternum brown ; shield rather convex ; sides sharply keeled; 

 pectoral about as long as broad. 

 Chelodina sulcifera. Gray, Proc. Zool. Soc. 1855. 



Hab. AustraUa. 



a. Adult? (shell only). Australia. Mr. Warwick's Col- 

 lection. 



This species differs from C. longicollis in the thickness 

 and grooved state of the plates, the small size of the areola, 

 and the convexity and width of the vertebral plates. 



7. HYDROMEDUSA. 



Head elongate, depressed, covered with a soft dotted 

 skin. Beaks narrow, exposed. Lips rather dilated and 

 fleshy at the angle of the mouth. Chin not l)earded. 

 Neck warty. Claws 4*4; outer toe on each foot small, 

 clawless. Tail elongate. Shell oblong, depressed, expanded 

 in front, slightly revolute on the sides. Nuchal plate large, 

 placed behind the front marginal plate, Uke a sixth verte- 

 bral ; the second pair of marginal plates large, edging the 



nuchal plate. Intergular plate large, long, marginal. Tro- 

 pical America. 



Hydromedusa, Tf'ayler, Syst. 135. 



Fitz. Syst. Rept. 29. 



Gray, Cat. Tort. B.M. 43 (1844). 

 Chelodina, Fitz. Verz. Wien, 45. 



Chelodina (part.). Bum. ^ Bib. Erp. Gen. ii. 446 (1835) ; 

 Cat. Mtth. /d. 21. 



* Back nodose behind. 



1. Hydromedusa Maxiniiliani. Prince Maximilian's 

 Hydromedusa. 



Shell oval, convex, entire, rounded in front, rather 

 angular behind, pale brown, black-spotted ; nuchal plate as 

 broad as the first vertebral ; the first vertebral longer than 

 broad ; the fourth costal and last two dorsal shields pro- 

 tuberant ; forehead flat. Throat yellow, brown-marbled. 



Hydromedusa Maxiniiliani, JVagler, Syst. 135. t. 3. f. 25, 26. 

 Gray, Cat. Tort. B.M. 44. 

 Fitz. Syst. Rept. 29. 

 Emys Maxiniiliani, Mikati, Delect, t. 

 Chelodina Maxiiiiiliani, Fitz. Verz. 48 ; Bum. ^ Bib. Erp. 



Gen. ii. 449 ; Cat. Meth. R. 21. 

 Hydraspis Maxiniiliani, Gray, Syn. 42. 



Hab. Brazils. 



a. Adult (stuffed). Third and fourth costal and fourth 



and fifth vertebral plates acutely tubercular. South 

 America ; Buenos Ay res. Dr. Miller's Collection, 

 1848. 



Var. Fifth vertebral shield with cross ridge only ; hinder 

 costal plate less prominent. 



b. Adult animal (dry). The nuchal or anterior vertebral 



plate trausversel}' divided in half. (Lost one vertebral 

 plate.) 



" Brazils." From the French Museum ; sent under the 

 name of Chelodina flavilabris. 



Osteology : — 



Peters in Miiller, Arch. Anat. ^ Phys. 1839, t. 14. 

 Wayler, Syst. t. 3. f. 2-42. 



c. Shell wanting some plates ; vertebral plate tubercularly 



keeled ; fifth with a broad transverse prominence ; 

 other shields smooth. La Plata. 



** Back with a central keel, rounded behind ; shields 

 grooved. 



2. Hydromedusa flavilabris. The Yellow-lipped 

 Hydromedusa. 



Shell elongate, depressed, oval, entire, rounded in front, 

 rather angular behind ; nuchal plate rather narrower than 



K 2 



