It is interesting to note the occurrence of both Pacific species of Poirieria, P. tenuis and P fragilis in Fiji. Examination of this new material supports their separation, proposed previously (Houart 2001: 256), on the basis of the broader siphonal canal relative to the shell height, and the broader, shorter and more broadly open, less acute, more backwardly recurved and more adapically bent carinal spine of P. tenuis. Moreover, on the last teleoconch whorl of P tenuis, the preceding axial lamellae almost entirely cover the succeeding spine on the sutural ramp, while the lamellae of P.fragilis are narrower and less expanded.

SW Pacific, Waterwitch Bank (12°30'S, 176°4rW), Vanuatu and now Fiji, live in 410-500 m.