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NATURE-STUDY REVIEW [16:8— Nov., 1920 



two or three along a bit of trail where the skilled hunter will collect 

 twenty or thirty. The collectors are very jealous of their finds, 

 and studiously conceal all knowledge of the location of the best 

 hunting grounds. 



The tree-snails of Hawaii have been of much assistance to 

 science, in helping to unravel some of the difficult problems con- 

 cerning the formation of the Hawaiian Archipelago, and its relation 

 to the other island worlds of the great Pacific. 



Tree snails occur in the summit forests of this typical Hawaiian peak 

 Hani-Huli, Oahu, height 2781 feet. 

 Photo by Vaughan MacCaughey 



