ON MOLLUSCA OF THE WEST COAST OP NORTH AMERICA. 359 



previous results have been tabulated, the materials have not been made 

 public. Mr. Cuming prepared a list of 90 sea shells for Mr. Darwin's use, 

 but it has been mislaid ; nor can Mr. Darwin furnish any additional infor- 

 mation, having unfortunately distributed his valuable collections before they 

 were geographically tabulated. The following list has been constructed from 

 one most kindly drawn out for this Report by Mr. Cuming, with as much 

 completeness as his extremely limited time allowed ; with the addition of 

 species tabulated in the Monographs, and a few from the Pandora Voyage. 

 It is probable that some species have been overlooked from " Hood's Island," 

 which appears both in the Galapagos group and in the central Pacific : both 

 of them are quoted in the Monographs as " Lord Hood's Island," and they 

 are very rarely distinguished from each other. 



List of Galapagos Shells. 



In this table, stations in America are marked in columns to the left ; M. Mazatlan and 

 G. the Gulf; C. A. Central America ; P. Panama; and S. A. South America; while Pacific 

 stations are recorded to the right. 



* Chama spinosa (M., C. A.) and Lima Pacifica (C. A., P., S. A.), are also quoted from 

 ' Lord Hood's Island," and are probably Galapagian species. 



