60 
Figure 1. 
Figure 2. 
Figure 3. 
Figure 4, 
Figure 5. 
Figure 6. 
Figures 7 
Plate XX. 
Cybele spicata Raymond. (Page 34.) 
An imperfect cranidium which serves as the type of this 
species. From the Collingwood at Craigleith, Ont. Twice 
natural size. No. 3564. 
Encrinurua cybeleformis Raymond. (Page 33.) 
The pygidium which is the holotype. From the Rockland 
formation at Xirkfleid liftlock, Ont. Twice natural size. 
No. 3385. 
Dalmanites achates Billings. (Page 38.) 
A nearly complete specimen from the Cobourg, at Picton, 
Ont. Natural size. No. 3384. 
Calymene sewaria Conrad. 
An entire specimen from the middle Trenton, 2$ miles 
south of Brechin, Ont. Natural size. 
Calymene sp. ind. (Page 38.) 
A young specimen which shows the proparian character 
of the free cheeks in immature examples of trilobites of this 
genus. From the shale above the Collingwood at Craigleith, 
Ont. Three times natural size. No. 3671. 
Ceraurinu8 marginatus Barton. (Page 37.) 
A cranidium from the Collingwood at Craigleith, Ont. 
Twice natural size. No. 5566. 
, 8. Ceraurus dentatus Raymond and Barton. (Page 35.) 
The holotype, showing the hypostoma in position. From 
the Trenton at Vankleek Hill, Ont. Natural size. No. 1775. 
