What's the possibility of getting a good ID from these photos? I think it's Demansia papuensis which is common in the area - about 50 kms south of Darwin. I understand Demansia atra is also in the area, but I can't differentiate between the two. It's active during the day. The area is a bit scrubby with Melaleuca and tall Acacia, with swamp and creek nearby but still dry at the time photos taken. This I think is the same but it was about 120 kms south of Darwin. It was chasing a Carlia skink. Missed out on its dinner and the Carlia lived to see another day. The area was cleared grazing land with sparse pockets of residual scrub or regrowth. Thanks in advance for any help with an ID.