TABLE OF CONTENTS. vii 



Page. 



Strophomena ------------ 245 



Orthothetes ------------ 253 



HiPPARIONYX ------------ 257 



Katserblla ------------ 259 



Derbta ------------'- 261 



Meekella ------------- 264 



Strbptorhynchus ----------- 267 



Triplegia ------- 269 



MiMULus - _----- 272 



Streptis ------------- 274 



Lept^na ------------- 276 



Rapinesquina ------------ 281 



Stropheodonta ----------- 284 



Strophonblla ------------ 290 



Leptella ------------ 293 



LBPT^NnLOPSis ------------ 294 



Plbctambonites ----------- 295 



Christiania ------------- 298 



Lbpt^nisca ------------ 299 



Davidsonia ------------- 301 



Chonetes ------------ 303 



Chonetina ------------- 310 



Chonostrophia -----■"■"."" *^10 



Chonopectus ------------ 312 



Chonbtella ------------ 313 



Strophalosia ------------- 314 



Daviesiella ------------ 317 



Aulostegses ------------- 319 



Ppoddctus ------------ 321 



Productblla ------------ 328 



Proboscidella ----------- 333 



Etheridgina ------------ 335 



SCPPLBMENTARY NoTE ON THE GeNUS ObOLUS ------ 337 



Descriptions of New Species ---------- 340 



INDEX ---------------- 356 



