Leperditia, sp., cf. Leperditia hisingeri, Schmidt.

5.

Primitia, sp. indt.

(O)—In a drab coloured dolomitic limestone:

Cephalopoda.

1.

A portion of some gyroceran or orthoceratite shell; resembles in some respects the external characters of Orthoceras nicolleti figured in Vol. iii., part 11, of the Palæontology of Minnesota, Pl. 55, fig. 1.

(P)—In a yellowish-gray dolomitic limestone:

Cephalopoda.

1.