OF DENISON UNIVERSITY. 
105 
Fixed cheeks one-third as wide as the space between the dorsal 
furrows. Palpebral lobes not coming to as sharp a point as figured 
in the Ohio report, but apparently a little rounded at their ends. 
Postero-lateral limb of the glabella beginning with a small groove at the 
base of the dorsal farrow which gradually widens towards the suture 
line, where it extends from the palpebral lobe to the occipital margin. 
Posterior portion of the facial suture curves outward from the posterior 
of the palpebral lobe, cutting the occipital margin at, or slightly 
beyond a line vertical to it and drawn from the most prominent part of 
the palpebral lobe. 
Anterior margin of the pygidium trilobate, the middle lobe project- 
ing a little, the lateral ones slightly curved at first, almost straight, 
then bending strongly and obliquely backwards, more or less angular 
at this point; then curving around and after a slightly angular deflec- 
tion coalescing with the lateral margin. Antero-lateral angles never 
so prominent as those figured in the Ohio Report, although somewhat 
approaching them in this feature. 
Movable cheeks small, greatest elevation at the upper posterior 
margin, making a large sweeping curve as it passes from the posterior 
to the lower or lateral margin. The facial suture before the eye mak- 
ing an angle of 30 degrees with the lateral line. Since this suture 
line agrees with the corresponding part of the glabella, these separated 
cheeks have been referred here. 
Glabellae, pygidia, and movable cheeks so far not found in con- 
nection. The association of the glabellae and pygidia may be con- 
sidered certain from their relative frequency and similarity to nearly 
related species. The cheeks are more conjectural in their relationship, 
although tolerably certain from their form. 
Smallest glabella, 9x11 mm. One of larger size, 40 mm broad at 
the palpebral lobes, 30 mm. long, 13 mm, high. Smallest pygidium, 
4x5 mm. One of larger size, 34 mm. broad, 25 mm. long, 5 mm. 
high. Movable cheeks 7-8 mm. broad, 12 mm. long to the point 
where it disappears beneath the glabella. Eyes two mm. long in the 
small specimens found. 
Locality and position. Soldiers’ Home, Fair Haven, Preble county, 
Clinton Group, abundant. 
