7. EMTDURA. 



229 



Si/noj^sis of the Species. 



I. Upper surface of neck with small roiindcfl tubercles ; nuchal 

 shield present ; mental barbels absent or very small. 



A. The Avidth of the bridge is loss than one third the length 

 of tho plastron. 



Barbels present ; a yellow lateral band 



from the angle of the mouth to the 



neck 1. onncquaria', p. 230. 



No trace of barbels ; ])]astron truncate 



or broadly rounded anteriorly ; a )'ol- 



low band from the eye to the car .... 2. hrefft'd, p. 231. 



Fi- (12. 



Skull of Emydura macquaricB. (From Gray, P, Z. S. 1872.) 



No trace of barbels ; plastron obtusely 

 acuminate anteriorly ; a yellow band 



from the end of the snout to the ear . . 3. albertisii, p. 232. 



k2 



