Ok, so they aren't all "tree boas," but I wanted to group all the Candoia together.
Solomon Island Tree Boas (Candoia bibroni australis)
A breeding group with the female being the darkest and largest. She may already be gravid. The male in the second photo has some great reds.
New Guinea Tree Boas (Candoia carinata carinata)
Solomon Island Ground Boa (Candoia carinata paulsoni)