Conchidium, sp. a small and immature form of what appears to be the Conchidium decussatum, Whiteaves.
Gasteropoda.
4.
Murchisonia (Hormotoma), sp. indt.
5.
Loxonema, sp. An imperfect individual with seven whorls preserved, having an apical angle of 10°, and would require at least three more volutions to complete the shell at this stage.
(E)—In impure limestone:
Brachiopoda.
1.
Strophomena (Rafinesquina) alternata, (Emmons) Conrad. Three valves of this species appear to be represented in this small slab of rock, and exhibit the characteristic sculpture and other surface characters.