MARINE MOLLUSKS COLLECTED AT THE GALAPAGOS 

 ISLANDS DURING THE VOYAGE OF THE VELERO III, 



1931-1932 



By 



Leo George Hertlein and A. M. Strong 

 California Academy of Sciences 



INTRODUCTION 



The marine mollusks discussed in the present paper were collected by 

 the senior author while a member of the first Expedition of the Velero III 

 to the Galapagos Islands in 1931-1932. A general account of the itinerary 

 of this expedition may be found in a paper by Eraser (1943, pp. 50, 

 260, 262, 272-273). Collections were assembled during December and 

 January at ten localities representing seven islands : Albemarle, Charles, 

 Chatham, Indefatigable, James, South Seymour and Tower. Nearly 

 all the specimens were taken along the beaches or in very shallow water. 

 A number of expeditions to the Galapagos Islands have collected chiefly 

 the larger marine shells ; therefore, during the present expedition, special 

 eliforts were made to obtain small forms in order to increase the knowl- 

 edge concerning that portion of the molluscan fauna occurring in the 

 islands. 



Preliminary identifications of the species represented in this collection 

 were made by the junior author shortly after the return of the expedi- 

 tion, but other duties led to delay in the completion of the report for 

 publication. Several papers dealing with other portions of the collections 

 assembled during the expedition have been published. One by the senior 



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