Leptochiton columnarius ( Hedley & May, 1908 )

Sirenko, Boris, 2020, New Zealand and Australian species of the genus Leptochiton (Mollusca Polyplacophora), Zootaxa 4851 (3), pp. 401-449 : 439

Leptochiton columnarius ( Hedley & May, 1908)

( Figure 46H )

The examination of photographs of the holotype of L. columnarius indicated that the antemucronal slope of the tail valve is one and a half times longer than the postmucronal slope. This is probably why this species was later placed in the genus Parachiton by Iredale & Hull (1925). L. columnarius is very similar to L. subantarcticus by its highly or very highly arched valves, but differs from the latter by having a posterior mucro.

Figures

FIGURE 46. Images of type specimens: A. Leptochiton otagoensis, probably holotype (AM C.159221); B. L. sperandus, holotype (AM C.126815); C. L. liratellus, paratype AM C.149661); D. L. liratus, neotype (AM C.10410); E. L. opiparus, holotype (AM C.32026); F, G. L. subantarcticus, holotype (AM C.149662); H. L. columnarius, holotype (AM C.29060).