Shells with Sculpture unusual for the Group.

Glycymeris sp. C.

In the Otago University Mining School collection there is a double-valved specimen, 60 mm. high and 55 mm. long, from an unknown locality. It is dorso-ventrally oval, equilateral, and has a closely-lined area. The sculpture, consisting of 40 flat obsolete ribs with linear interstices, is unusual fox this group. The beaks are only moderately raised above the dorsal margin, but they are broad and prominent, the whole shell being considerably inflated. In the absence of a locality it would be unwise to give the shell a specific name.

From a shell-bed about the horizon of the Wairarapa limestone, Pukenui, south of Martinborough, the author collected the top half of a valve some-similar to sp. C, but larger and flatter.