7. EMYDURA. 229 
Synopsis of the Species. 
I. Upper surface of neck with small rounded tubercles ; nuchal 
shield present; mental barbels absent or very small. 
A. The width of the bridge is less than one third the length 
of the plastron. 
Barbels present; a yellow lateral band 
from the angle of the mouth to the 
INO Ki Soon peae uae ORE OLIOn aoe 1. macquarie, p. 230. 
No trace of barbels; plastron truncate 
or broadly rounded anteriorly; a yel- 
low band from the eye to theear.... 2. krefftii, p. 231. 
Fig. 62. 
Skull of Hmydura macquarie. (From Gray, P. Z.8. 1872.) 
No trace of barbels; plastron obtusely 
acuminate anteriorly ; a yellow band 
from the end of the snout to the ear.. 3. albertisti, p. 232. 
R2 
