1864.] | MR. G. KREFFT ON A NEW AUSTRALIAN SNAKE. 21 
Head rather high ; body thick and compressed ; tail conical, taper- 
ing, prehensile, ending in a blunt point ; anal spurs small ; ten upper 
labials, the sixth coming into the orbit ; two anterior and four poste- 
rior ocular shields; two loreals, the second nearest to the eye very 
small; one nasal, pierced by the nostril ; eye moderate, pupil ellip- 
tical, erect. Three pairs of frontal shields, the middle pair longest ; 
vertical broad, the largest shield of the head, with an obtuse angle 
in front and an acute one behind, sides rounded; superciliaries 
large, prominent above the eyes ; occipitals distinct, but smaller than 
the vertical, forked and rounded behind ; the first pair of frontals 
small, triangular ; the second pair five-sided, nearly as large again 
as the first pair ; the third smaller than the second and larger than 
the first, quadrangular. Of the fourteen lower labial shields, the first 
seven are narrow and elongate, the rest broad ; no groove upon the 
labials. The nasal shield is very broad, with a deep pit, shaped like 
a bean, and much produced backwards. Head moderate; body 
thick, compressed ; anal spurs small. Colour light brown, with a 
series of darker rings, which become indistinct near the sides ; below 
