Discussion

Chilton described this species from specimens from Mt. Mihiwaka. Later (1924) he described a form from Riverton, New Zealand, which he considered to belong to this species and which I redescribe in full as a new species. He also described specimens from Enderby Island, Auckland Islands Group (1909) which he attributed to C. mihiwaka, but these have proved to be a third species from the New Zealand region, described below as Chiltonia enderbyensis.

Chiltonia mihiwaka is distinguished by the shape of the male and female gnathopods, the third uropod which appears to be one-segmented but shows traces of a second segment; the shape of the telson; and the male first pleopod.

Stephensen's specimens (1927) are probably C. enderbyensis, but for lack of information they are here left as C. mihiwaka.