A, . Wine hell on supposed New Cephalopods. [364] 15 
distinctly indented at the apex by a dorsal lobe; lateral saddle 
nearly twice as long as the dorsal, its apex rounded and slightly 
turned toward the umbilicus, its width equal to its height, size 
a little larger than the second lateral lobe; accessory saddle pro¬ 
jecting nearly as far forward as the lateral, but twice as broad, 
and flatly rounded anteriorly. Yentral lobe small, but pro¬ 
found, and separated on each side by a narrow, rounded saddle 
from another small lobe upon the ventral surface of the whorl. 
Greatest diameter of shell as far as seen *72 (100); width of 
aperture between the auriculations *21 (29); distance from tip 
to tip of two dorsal lobes nearest the aperture *15 (21); distance 
between strise on dorsal surface of cast *004. 
Localities . Marshall and Jonesville. 
The side view of this species resembles that of G. uniangularis 
Conrad, but the details of the septa are materially different. It 
has affinities with G. carinatus Boyr., and G. lamed , var. compla - 
nalus Sandb., from the “ Cypridinenschiefer” in Nassau, but dif¬ 
fers from both in its closed umbilicus, the want of a dorsal lobe, 
and the presence of an accessory saddle, which, in our species, 
is as prominent as the lateral one. 
Goniatites Oweni, 
Hall (13th Rep. N. Y. Reg\, p. 100). 
A Groniatite common in the sandstone which is the prolonga¬ 
tion of the beds at the grindstone quarries, on the shore of Lake 
Huron, in the vicinity of Pt. aux Barques, presents all the essen¬ 
tial characters of G. Oweni. Comparing it however with figures 
and descriptions of this species, as well as with specimens from 
Rockford, Ind., our fossils are somewhat more compressed late¬ 
rally, the septa are more approximated, and the lateral lobes lie 
along the middle of the lateral surface, instead of considerably 
nearest the dorsal region. 
Prof. Hall’s var. parallela (parallelus ?) is also distinctly repre¬ 
sented at the same localities, but it is to be remarked that in 
this variety the umbilicus is more open instead of less so. 
Goniatites Shumardianus, n. sp„ 
Shell of moderate size, laterally compressed; dorsal surface 
narrowly rounded, dorso-lateral surfaces but slightly convex, 
making with each other an angle of about 27°, abruptly inflected 
into the moderately open umbilicus, which reveals a small por¬ 
tion of two or three preceding whorls; greatest width of trans¬ 
verse section (near the umbilicus) two-thirds the dorso-ventral 
dimension. Septa rather remote. Dorsal lobe not satisfactorily 
defined, but apparently simple, sharply acute, with a length 
about equal to the breadth at the base; first lateral lobe extend¬ 
ing as far back as the dorsal, acute, but with a broad base; sec- 
