” balthica, (Hisinger) var. arctica, Salter.
16.
Isochilina grandis, (Schrenk) Jones, var. canadensis, N. var.
17.
Primitia mundula, Jones, var. arctica, N. Var.
18.
Beyrichia kloedeni, McCoy.
Besides the above, there are remains of the tracks and trails of Annelida which cannot be identified with any described form, and to them have been given specific designations as follows:—
19.
Eugyrichnites lowi, N. Sp.