742 THE PALEONTOLOGY OF MINNESOTA. 
[Cybele winchelli. 
Genus CY BELE, Lovén, 1845. 
CYBELE WINCHELLI, 2. Sp. 
There is a single extended individual of this genus, considerably defaced about 
the head, so that the glabella is wholly lost; but the outline and proportions of the 
cephalon and the structure of the other parts are preserved. General outline 
linguate, tapering from the head backward to a subacute extremity; axial length 
Fig. 59.—Cybele winchelli. 
36 mm., greatest width 26 mm. Surface convex, flattened above. Cephalon transverse, 
broadly rounded at the sides, somewhat concave on the frontal margin which was 
slightly elevated. Length 10 mm.; width 26mm. As the structure of the glabella 
is lost, a figure is here introduced copied from one of Schmidt’s drawings of 
Fig. 60.—Cephaloo of Cybele bellatula (atter Schmidt). 
C. bellatula Dalman. This shows the three distinct pairs of lateral lobes, the rather 
small frontal lobe and the peculiar projection of that portion of the shield lying 
between the upper anterior extremities of the facial sutures. 
Eye-nodes large and elevated, situated near the transverse diameter of the shield 
and directed somewhat anteriorly. Facial suture taking its origin on the outer margin. 
considerably above the genal angles, whence its course may be traced as far as the 
eye-node. Margin of the cephalon thickened, convex and somewhat spreading 
on the ante-lateral limb, receding and becoming concave posteriorly, thence 
produced into rather short divergent genal spines. Occipital ring and groove well 
marked. 
Thorax subquadrate, tapering; 20 mm. in width at the anterior extremity; 
8mm. in width at the posterior extremity; length 20 mm. Composed of twelve 
segments. Axis proportionally narrow and convex throughout, having about 
