2. HrDROMKDPSA. 



211 



Chelodina flavilabris, I)um. ^- Bihr. ii. p. 44G (lS3o) ; Guich. in 



Citsteln. Vol/. Amor, Sud, Hept. p. 8, pi. ii. (185")). 

 Ilydroniedusa maxiiiiiliaiii, Grai/, Cat. Tort. p. 44 (1844); Giinth. 



Ann. v.y Mw/. X H. (-5) xiv. p. 4i>i^ (1884). 



subdopivspa, Graij. Proc. Zool. Soc. l;^o2, p. 134. 



flavilabris, Gray, Cat. Tort. p. 44, a)id Sh. livpt, i. p. 50 (185.5) ; 



Strauch, Clielon. Stud. p. 10:^ (]8(y) ; Grai/, Ann. ^- Ma<j. N. II. 



(4) xi. p. 3U4 (1873). 

 deprt'ssa, Grai/, Cat. Sh. liept. i. p. GO, pi. xxvi., a7id Siippl. 



p. 72 (1870J, and Ann. S)- Mag. N. Jl. (4) xi. p. 303 ; Giinth. I. c. 



p. 423. 



baukaj, Giebel, Zeitsehr. ges. Nafurw. xxvii. p. 19, pi. iv. (18CG) ; 



Grag, Ami. ^- Mag. X. H. (4) xi. p. 303. 



Carapace very much depressed, with a single obtuse keel, which 

 disappears in the adult ; dorsal shields concentrically striated in the 



Fig. 54. 



Shell of Hydromedtisa tecttfera. 



young, smooth in the adnlt : nuchal shield very variable in shape 

 and in size, either narrower or broader than the first vertebral, jn-o- 

 portionally larger in the young, in which it nearly equals in length 

 the latter shield. Plastron large, notched behind, with narrow 



