364 A. Winchell on supposed New Cephalopods. 
distinetly indented at the _ 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. Ventral lobe small, but pro- 
found, and separated on each side by a narrow, rounded saddle 
om 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); distancé from tip 
to tip of two dorsal lobes nearest the aperture °15 (21); distance 
between strize on dorsal surface of cast ‘004. 
Localities. Marshall and Jonesville. : 
The side view of this species resembles that of G. wniangularis 
Conrad, but the details of the septa are materially different. It 
has affinities with G. carinatus Boyr., and G. lamed, var. compl 
natus 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. 
GontatitEs OweEnt, 
; Hall (13th Rep, N. Y. Reg., p. 100). a 
A Goniatite common in the sandstone which is the prolong 
tion of the beds at the grindstone quarries, on the shore of Lake 
Huron, in the vicinity of Pt. aux Barques, presents all the esse" 
tial characters of G. Oweni. Comparing it however with figures 
and descriptions of this species, as well as with specim 
Rockford, Ind., our fossils are somewhat more com rf 
rally, the septa are more approximated, and the lateral Jobes 7¢ 
along the middle of the lateral surface, instead of co 
nearest the dorsal region.’ 
Prof. Hall’s var. parallela (parallelus 2) is also distinctly rept 
sented at the same localities, but it is to be remarked that ™ 
is variety the umbilicus is more open instead of less so. 
Gowtatires SHUMARDIANUS, n. sp. y 
Shell of moderate size, laterally compressed; dorsal surface 
narrowly rounded, dorso-lateral surfaces but slightly. ceo 
making with each other an angle of about 27°, abruptly infle m 
into the moderately open umbilicus, which reveals a epreinel 
tion of two or three preceding whorls; greatest width of a7 
Verse section (near the umbilicus) two-thirds the re me 
dimensior pta rather remote. Dorsal lobe not sa ; 
3 parently simple, sharply acute, with a “€H5, 
i at the ; first lateral lobe exer 
the dorsal, acute, but with a broad base; 
