NORTH AMERICAN CONCHOLOGY. 



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Crysodomus antiquus 



Swainson? Carp, 

 Murex antiquus Linn. 

 Fusus antiquus Lam. 

 Tritonium [Fusus) antiquum 

 Midd. 

 var. Behringiana Midd. 

 Middendorfii Cooper, 

 Tritonium {Fusus) decem- 

 costatum Midd., nee Say. 

 sitcliensis Carp. [Midd. 

 Tritonium (Fusus) sitchense 

 Nassa mendica Gould. 



Gibbsii Cooper (n. sp.) 

 Purpura lactuca Esch. 

 Murex lactuca Esch. 



ferrugineus Esch. 

 P. septentrionulis Reeve. 

 Muricidia lactuca Carp, 

 ostrina Gould. [Desh. 



P, Freycinetii Midd., non 

 decemcostata Midd. 

 lapillus Linn. 

 emarginata Desh. 

 P, Conraiti Nutt. 

 Monoceros engonatum Con. 

 Purpura (^Monoceros) engo- 



nata Conr. 

 M. unicarinatum Reeve, 

 lapilloldea Conr. 

 M. punctatum Gray. 

 Columbella gauaapata Gld. 



valga Gould. 

 Natica Lewisii Gould. 



A', herculea Midd. 

 Potamia puUatua Gould. 



C<rilltid;v jiulldia Carp. 

 Melania plicifera Lea. 

 ailicula Gould. 

 ahortaenaia Lea. 

 Amnicola Nuttalllana Lea. 

 I'dludiua Nutt(dliana Lea. 

 aemlnalia Hinds. 



Ptdudina seminalis Hinds. 

 Bithinia seminalis Carp. 



Page. 



374 Turritella Eschrichtii Midd. 



374 Littorina rudis Gould. 



L. Barclayana ? Hinds. 

 374 scutulata Gould. 



374 planaxis Nutt. 



375 Trochua filosus Wood. 



T. ligatus Gould. 

 modestus Midd. ? 

 375 Bchantaricus Midd. 

 375 Haliotis Kamtschatkiaua 



Jonas. 

 375 FisBurella nigropunctata 



375 aspera Esch. \_Sowb. 



F. cratilia Gould ? 



denseclathrata Reeve? 



376 Nacella instabilia Carp. ? 

 376 Acmaea pelta Carp. ? 



376 peraona Carp. ? 

 376. apectrum Carp.? 

 376 • Bcabra Carp. ? 

 376 aeruginoaa Carp.? 

 376 Scurria mitra Carp. ? 

 376 Chiton muacoaua. 

 376 aubmarmoreua. 

 376 tunicatua. 

 376 lignoaua. 

 376 Helix fidelia Gray. 



H. Nuttalliana Lea. 

 376 Townaendiana Lea. 



376 Columbiana /-'«. 



//. lahiosa Gould. 



377 Vancouverenaia Lea. 

 377 devia Gould. 



IL Laxhrvillei Pfr. 

 377 tudiculata Binney. 

 377 Succinea Nuttalllana L^cn. 



377 Llmax Columbianua Gould. 



378 Lymnaea umbroaa Gould. 

 378 emarginata Say, 



378 jugularia Say. 



378 Phyaa elongata Say. 



378 heteroatropha Say. 



378 bullata Gould. MS. 



378 Ancylua caurinua Coop. n. s. ? 



378 Planorbia corpulentua Say. 



