Ill 
56 
Plate IX. 
Figure 1. Eoharpes ottawaensis (Billings). (Page 29.) 
The type, presented by Sir James Grant. From the 
• middle Trenton at Ottawa, Ont. 1-37 times natural size. 
No. 329. 
Figure 2. Semiarges paulianus (Clarke), (Page 32.) 
A cranidium from the Hull formation at the Kirkfield 
liftlock, Ont. Twice natural size. No. 3741. 
Figures 3-5. Bathyurus ingalli Raymond. (Page 31.) 
A cranidium, free cheek, and pygidium from the Hull 
formation at Klrkfield liftlock, Ont. The cranidium is 1-52 
times natural size. The cheek and pygidium are natural size. 
The check is No. 3563a, the pygidium No. 3'5 &3 . 
Figure 6. Eoharpes dentoni (Billings). (Page SO.) 
A nearly complete specimen from the middle Trenton at 
Ottawa, Ont. No. 1781c. 
Figure 7. Remopleurides striatulus (Walcott). (Page 31.) 
An hypostoma from the upper part of the middle Trenton 
at Trenton, Ont. Twice natural size. No. 37'5'8. 
Figure 8. Goldius lunatus (Billings). (Page 32.) 
A cotype, from the upper part of the middle Trenton at 
Ottawa, Ont. No. 1781c. 
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