Uroboric consciousness stands as one of the foundational concepts in Erich Neumann’s ambitious reconstruction of psychic phylogeny, developed most fully in The Origins and History of Consciousness (1954). For Neumann, the uroboros — the self-devouring serpent of antiquity — names not merely a mythological image but the primordial condition of psychic life: a state of undifferentiated wholeness in which ego and unconscious, inner and outer, subject and object remain indistinct. Uroboric consciousness, on this account, is less a mode of knowing than a mode of being prior to the very conditions that make cognition possible. The ego has not yet ‘wrested any firm foothold from the flood of unconscious being’; it floats, as Neumann writes, on the primal ocean. The term carries a pronounced developmental weight: uroboric consciousness is both the irretrievable origin and the perpetually threatening regression. Neumann maps it simultaneously onto ontogeny (infantile experience), phylogeny (prehistoric humanity), and the living underside of modern psychic life (the dream, the group, the mass). Critics within the post-Jungian tradition — notably Andrew Samuels — interrogate the evolutionary assumptions scaffolding this schema, questioning whether myth can serve as neutral developmental evidence. The concept remains, however, indispensable for understanding the depth-psychological account of how selfhood, heroism, and individuation are won from an original plenitude.