Hybridization was accomplished between Jasus novaehollandiae and Jasus edwardsii in the laboratory. Hybrid phyllosoma hatched out from female Jasus novaehollandiae were co-cultured at 18°C with phyllosoma of Jasus lalandii. From 1, 000 phyllosomas, two individuals reached the final stage; one metamorphosed into puerulus 319 days after hatching out, the other repeated the final stage 324 days after hatching. The larval life history of the hybrid resembled that of Jasus lalandii (Kittaka, 1988): at least 15 molts occurred during phyllosoma stage with 20-30 day intermolt intervals for advanced stages. The culture of Jasus hybrids throughout phyllosoma development indicates the possibility of culture of temperate palinurids. Evidence generated also supports the hypothesis that these Jasus species diversed from a single circumpolar species.