3. PODOCNEMIS. 205 



bridge loss than the width of the hind lobe; intcrgnkr sliicld 

 much longer than gulars ; the longest median suture is formed by 

 the abdominals, the shortest by the humerals ; young with three 

 tubercular swellings on each side of the plastron, traces of which 

 may be found in adult specimens. Interorbital space concave, much 

 narrower than the diameter of the orbit; upper jaw not hooked; a 

 large interparietal shield, entirely separating the parietals ; the 

 width of the mandil)le at the symphysis nearly equals the diameter 

 of the orbit ; alveolar surface of ui)pcr jaw with a short and feeble 

 ridge ; inner edge of mandible much raised, the mandible subtri- 

 angular in section. Chin with a single dermal appendage. Two 

 very large shields on the outer border of the foot. Shell brown or 

 olive above, yellowish, blotched with brown, interiorly; head reddish 

 brown above. 



Length of shell 31 centim. 



Amazon. 



a. Ad., spir. Upper Amazon. ^fr. E. ]?artlett 



h. Ad., stffd. Up])er Amazon. ^fr. E. ]Jarllctt 'C.I. \ Bartlettia 



c. Ad., skel. Uinier Amazon. Mr. E. linrtlntt 'C. ni/iiniA 



C. 



C. 



.) (Types of 



. I pitipii.) 



d. Ad., shell. Upper Amazon. II. W. Bates, Esq. [C] 



6. Podocnemis madagascariensis. 



Dumerilia madagascariensis, Grandid. Rev. et Maq. de Zool. (2) xix. 

 p. 232 (1867) ; Grat/, Suppl. Cut. Sh. liept. i. p. 82 (1870), and 

 Ann. ^- Mag. N. 11. (4) xi. p. 14!) (1873). 



Shell oval, moderately depressed, keeled in the young ; posterior 

 border more or less strongly reverted ; dorsal shields with more or 

 less distinct radiating stria3. Plastron large, front lobe broader than 

 hind lobe ; the wddth of the bridge equals the width of the hind 

 lobe ; intergular shield very small, much shorter than the gulars, 

 which form a suture behind. Interorbital space flat, nearly as 

 broad as the diameter of the orbit in the adult, half as broad in the 

 young ; upper jaw slightly hooked ; jugal bone forming a suture 

 with the quadrate : a large interparietal shield, behind w^hich the 

 parietals form a suture ; the width of the mandil)le at the symphysis 

 much exceeds the diameter of the orbit ; alveolar surface of both 

 jaws with a feeble median ridge. Chin with a short dermal appen- 

 dage. Three very large shields on the outer border of the foot. 

 Brown above, finely dotted or striated with black ; plastron yellow, 

 uniform or soiled with brown. 



Length of shell 35 centim. 



Madagascar. 



a. Ad., skel. Anuavandra, W. Mada- 



gascar. 

 ^>. $,stffd. S.E. Betsileo. Mr. T. Waters [C.]. 



c, d, e,f. Hgr. & yg., S.E. Betsileo. Mr. T. Waters [C.]. 



skins. 

 (J. c? , skel. S.E. Betsileo. Mr. T. Waters [C] 



