BLOTCHED BLUETONGUE Tiliqua nigrolutea (Quoy and Gaimard, 1824)
This lizard attains 60 cm and is found in the highland regions of central and southern New South Wales, most of Victoria, Tasmania and the far south-east of South Australia. The colour varies greatly with location. New South Wales specimens are usually black with bright orange or yellowish blotches, while Victorian and Tasmanian specimens are a much duller bluey-grey. Northern specimens grow larger than their southern counterparts.
These robustly built lizards are omnivorous, although around December in some areas they feed almost exclusively on Christmas beetles.
From four to ten very large young, measuring 15 cm, are born in summer. Occasionally in the wild this species hybridizes with the Common Bluetongue Tiliqua scincoides. The young produced are intermediate in colour between the two species, and are themselves apparently fertile.

The above was from the book Australian Reptiles and Frogs by Raymond Hoser and now available on a fantastic CD-Rom along with a vast amount of other information, papers and the like on reptiles, frogs and other wildlife.