PREFACE. 



There has been a demand on the part of colleclors for original 

 descriptions of Hawaiian land shells, many of which are now^ out 

 of print. While the present paper does not claim to be complete, 

 it is hoped that these descriptions will prove of some assistance to 

 those who study the Genus Achatinella, and who have found 

 difficulty in securing the original descriptions. 



As Dr. C. Montague Cooke of the Museum staff is at present 

 vigorously colledling and studying the Hawaiian Land Shells, 

 I have, with the consent of the Trustees, asked Mr. E. W. Thwing, 

 whose studies of these interesting shells have been very extensive 

 to aid in the good work by ferreting out from almost forgotten 

 places the original descriptions. The results of his careful and 

 very considerable labor are presented in the following paper. 



WM. T. bric;ham. 



