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AUG. F. FOERSTE 
Calymene niagarensis Hall 
Plate XVIII, figs. 12 A, B 
Specimens from the Rochester shale of New York, furnished 
by the New York State Museum, through Dr. Ruedemann, 
have glabellae with a somewhat swollen frontal lobe, elevated 
rather abruptly above the frontal margin. The articulating 
margin along the anterior of the pygidium curves outward from 
the axial lobe and then backward to the posterior margin. When 
the axial lobe is placed in a horizontal position the posterior 
margin of pygidium appears rounded or slightly angular. The 
axial rings are transverse, about 7 in number, leaving only a 
very short posterior undifferentiated end. 
Calymene breviceps Raymond 
Plate XVIII, fig. 7 
Calymene breviceps Raymond, Bull. Mus. Comp. Zool. Harvard Univ., 60, 1916, 
p. 27, pi. 3, fig. 11. 
Specimens of the Calymene which is common in the Waldron 
shale at Newson, Tennessee, compared with typical Calymene 
niagarensis, have a somewhat flatter frontal lobe on the glabella, 
and this frontal lobe rises less above the anterior margin of the 
cranidium. The axial lobe of the pygidium has more convergent 
sides; the axial rings are curved, especially the anterior ring. 
When the axial lobe is placed in a horizontal position, the pos- 
terior margin of the pygidium is less curved and frequently has 
an almost transverse outline. 
Calymene cedarvillensis sp. nov. 
Plate XVIII, figs. 11 A, B, C 
In the Cedarville dolomite, in the quarry at Cedarville, Ohio, 
a large species of Calymene is found, equalling Calymene vogdesi 
in size. The only complete specimen found, more or less dis- 
torted by pressure along its right side and along its anterior 
