Colour brown, lips yellow; belly salmon-red to dark olive-grey; end of tail salmon-red. Total length, 440 millimetres; tail 80. _Habitat_: Southern Australia and Tasmania. (4) _D. muelleri._--Scales in 17 rows; 118 ventrals; 38 subcaudals. Colour grey-brown; lips and chin with yellow spots; belly grey. Total length, 292 millimetres; tail 52. _Habitat_: Queensland. (5) _D. frenata._--Scales in 19 rows; 167 ventrals; 35 subcaudals. Colour olive-brown; upper lip yellow; belly white. Total length, 390 millimetres; tail 54. _Habitat_: Lake Elphinstone, Queensland. (6) _D. ramsayi_ (fig. 54).--Scales in 15 rows; 164 ventrals; 51 subcaudals. [Illustration: FIG. 54.--_Denisonia ramsayi._] Colour dark olive-green above, yellow beneath; subcaudals nearly black. Total length, 265 millimetres; tail 50. _Habitat_: New South Wales. (7) D. signata (fig. 55).--Scales in 17 rows; 153-170 ventrals; 41-56 subcaudals. [Illustration: FIG. 55.--_Denisonia signata._] Colour dark olive or black, head brown; belly dark grey or black. Total length, 640 millimetres; tail 120. _Habitat_: Queensland, New South Wales. (8) _D. daemelii._--Scales in 17 rows; 147-168 ventrals; 33-45 subcaudals. Colour olive, head darker; belly yellowish-white. Total length, 380 millimetres; tail 60. _Habitat_: Queensland. (9) _D. suta._--Scales in 19 rows; 157-164 ventrals; 25-30 subcaudals. Colour pale olive-brown, head dark brown, nape black; upper lip and belly yellow. Total length, 200 millimetres; tail 23. _Habitat_: Southern Australia. (10) _D. frontalis._--Scales in 19 rows; 154 ventrals; 30 subcaudals. Colour light brown, with a vertebral black line; belly pearly-white, with a median bronze-coloured band. Total length, 400 millimetres; tail 50. _Habitat_: New South Wales. (11) _D. flagellum._--Scales in 17 rows; 132-138 ventrals; 25-27 subcaudals. Colour pale brown; vertex, occiput, and nape black; upper lip and belly white. Total length, 380 millimetres; tail 40. _Habitat_: Victoria. (12) _D. maculata._ (fig. 56).--Scales in 17 rows; 121-136 ventrals; 20-30 subcaudals. [Illustration: FIG. 56.--_Denisonia maculata._] Colour dark grey-brown, or brown; a large dark olive-green or brown blotch on the head, with two or three unequal light grey spots; belly white. Total length, 400 millimetres; tail 55. _Habitat_: Queensland. (13) _D. punctata._--Scales in 15 rows; 160 ventrals; 25 subcaudals. Colour pale brown; head and nape orange; upper lip and belly yellow. Total length, 350 millimetres; tail 36. _Habitat_: North-Western Australia. (14) _D. gouldii_ (fig. 57).--Scales in 15 rows; 140-170 ventrals; 22-23 subcaudals. [Illustration: FIG. 57.--_Denisonia gouldii._] Colour brownish-yellow; nape black; head covered with a broad greenish-blue blotch, extending from the nose to the neck; upper lip and belly yellow. Total length, 435 millimetres; tail 50. _Habitat_: Western and Southern Australia.