I08 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. IO3 



The large, well-demarcated glabella tapers at a normal rate to a 

 rounded front. Two pairs of shallow recurved furrows are visible. 

 The fixigenes at the anterior end of the eye are about half the glabellar 

 width. The eye lines are made conspicuous by a furrow which 

 parallels them on their front side. Brim about half the glabellar length 

 exclusive of the occipital ring. A conspicuous, somewhat thickened 

 rim widens backward in the center, greatly reducing the width of the 

 preglabellar area. The moderate-sized eyes are not strongly bowed 

 and are situated posterior to the middle of the cranidium. The cranid- 

 ium has considerable relief in each separate part, as well as in its 

 entirety. Longitudinally the cranidium stands high, with a fairly even 

 curvature, slightly accentuated in the glabella. In cross section the 

 glabella stands completely above the fixigenes. The fixigenes are 

 rather strongly convex in lateral direction, having greatly depressed 

 posterolateral limbs, with convexity increasing anterior to the eye lines. 



Nolichucky shale ; (loc. 27d) U. S. 11,7 miles northeast of Rogers- 

 ville, Tennessee. 



HoIofypc.—U.S.l<lM. No. 108734. 



