Big black one on left looks like Psuedemoia duperreyi (has it got colour under throat) or pseudemoia trilineata although ive never caught them in tassie only SA and WA. There isnt a whole lot of species in tassie like we have on mainland so you should be able to track down name easier, its also more likely of it being a new species as tassie is the least explored and noted reptile wise. good luck james