I. 



DIAGNOSES 



OF 



NEW SPECIES OF MOLLUSKS, 



FROM 



THE WEST TROnCAL REGION OF NORTH AMERICA, 



PRINCIPALLY COLLECTED BY THE REV, J. ROW ELL, OF SAN FRANCISCO 



BY 



rillLIP p. CARPENTER, B. A., Vn. D. 



From the Proceedings of the Zoological Society of Loiulon, pj). 273-282, 



March 14, 1865. 



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