3.
Trematospira, sp. indt.
4.
Conchidium decussatum, Whiteaves.
5.
Clorinda, sp. probably a new form which I would designate, Clorinda lowi, N. Sp.
6.
Sieberella galeata, Dalman. A form which is very near the type of this cosmopolitan species. If it prove a variety or mutation, I should designate the same as var. Chidleyensis, N. var.
The above are all of Silurian age.
(B)—From a dark gray impure limestone resembling that of the Black River and Trenton formations of southern Canada: