Habitat: Queensland.
(17) D. carpentariæ.—Scales in 15 rows; 166-183 ventrals; 31-43 subcaudals.
Colour brown; upper lip and belly yellowish-white.
Total length, 285 millimetres; tail 47.
Habitat: Northern Queensland.
(18) D. pallidiceps.—Scales in 15 rows; 170-178 ventrals; 37-38 subcaudals.
Colour dark olive-brown; head somewhat paler; belly yellowish. Total length, 590 millimetres; tail 80.
Habitat: Northern Australia.
(19) D. melanura.—Scales in 15 or 17 rows; 165-171 ventrals; 38-48 subcaudals.
Colour dark brown; head and sides usually reddish; belly yellow; tail black.