172 



GEOLOGICAL SUMMARY, 



No. 299. Bellerophon bilobatUS, Sow. (3 specimens). 



No. 298. Murchisonia bellicinati, Hall. (4 specimens). 



No. 287. Cyclonema bilix, Con. (4 specimens). 



No. 281. Raphistoma lenticulare, Sow. (2 specimens). 



No. 253. [598] Cyrtoceras macrostomum, Hall. 



No. 251. Endoceras proteiforme, Hall. 



No. 250. [585] Oithoceras amplicameratum, Hall. 



No. 249. Orthoceras Duseri, H. & W. (2 specimens). 



No. 248. [580] Lituites undatus, Conrad. 



ARTICULATA. 



No. 171. Scolithus linearis, Hall. 



No. 143. Asaphus gigas, De Kay. 



No. 144. [373] Asaphus gigas, De Kay. 



No. 142. [376] Asaphus megistos, Locke. 



No. 145. [386] Acidaspis Buchii, Barrande. 



No. 146. [390] Bumastus (Illaenus) Barriensis, Murch. 



No. 147. Calymene niagarensis, Hall. (2 specimens). 



No. 148. Calymene senaria, Conrad. (2 specimens). 



No. 149. [394] Calymene Blumenbachii, Brongniart. 



No. 150. [398] Ceraurus pleurexanthemus, Green. 



No. 151. [407] Dalmania (Phacops) limulurus, Green. 



No. 153. [410] Dalmania nasutus, Conrad. 



No. 154. [412] Dalmania nasutus, Conrad. 



No. 156. [416] Dikelocephalus minnesotensis, Owen. 



No. 157. Elipsocephalus Hoffii, Schlotheim. 



No. 157. [421] Harpes ungula, Barrande. 



No. 158. [423] Homalonotus delphinocephalus. 



No. 159. [426] Illaenus giganteus, Brong. 



No. 160. [428] Lichas Boltoni, Green. 



No. 161. [431] Lichas pustulosus, Hall. 



No. 163. [437] Paradoxides bohemicus, Bock. 



No. 166. [447] Sphaerexochus mirus, Beyrich. 



No. 167. Triarthrus Becki, Green. 



No. 168. Trinucleus ornatus, Burm. 



No. 169. Trinucleus concentricus, Eaton. (2 specimens). 



No. 170. [1296] Climactichnites Wilsoni, Logan. 



No. 138. Eurypterus remipes, DeKay. 



No. 139. [1314] Eusarchus scorpionis, Grote and Pitt. 



No. 137. [370] Pterygotus acuminatus, Salter. 



Cambrian and Silurian, 64 Genera, 81 Species, 103 Specimens; 



Value $75.00 



