Dorsal and right lateral views of heads of juveniles of Toxicocalamus loriae Group snakes. A, B T. loriae (BPBM 10966), Agaun, Milne Bay Province, PNG. C, D T. nymani comb. nov., spotted form (BPBM 5442), Kalolo, Morobe Province, PNG. E, F T. nymani, dark form (BPBM 23699), Wau, Morobe Province, PNG. G, H T. lamingtoni comb. nov. (AMS R9352), Mt. Lamington, Oro Province, PNG. I, J T. vertebralis sp. nov. (KU 129086), Wau, Morobe Province, PNG. K, L T. spilorhynchus sp. nov. (AMNH R-107204), Garaina, Morobe Province, PNG. M, N T. atratus sp. nov. (CAS 118958), Mintima, Chimbu Province, PNG.