192 SILURIAN F(3SS1LS FROM ARISAIG, NOVA SCOTIA — AMI. 



TRILOBITA. 



157. Calymene Blumenbachi, Brongniart. 



158. Homalonotus sp. 



159. " Dawsoni, Hall. 



160. Phacops ? sp. 



161. Dalmaiiia Logani, Hall. 



162. Acidaspis tuberculatus ? Conrad. 



MEROSTOMATA. 



163. Stylonurus ? sp. no v. 

 Ottawa, March 7th, 1892. 



