Xaiitilus

Breyn.

capax

Hall.

Lit.

occidentalis ....

U. Orthoceras . .

Hall.

Breyn.

Lit.

abnorine

alienum

anellum

. Cour.

angulation ....

. Wahl.

annulation ....

cameolare

. M'Ches.

columnare

crebresceus ....

Cuvieri?

. Troost.

gregarium

. Hall.

non

Sou.'.

lloyi

. M’Ches.

Laphami

. M'Ches.

lai/ucatum ....

lineolalum

IG

medullare

multicameralum?

Niagarense

planoconvexum . . .

. Hall.

undulatum ....

undulostriatum? . ..

. Hall.

Woodworlhi M'Ches.