PREFACE, 
iv 
lias been mere elucidation, and friendship forbids all criticism (however tacit) which can 
possibly be avoided. The list itself is not put forth as a scientific arrangement, but only 
as a convenient sequence. 
After an interval of two or three years it is hoped that materials for a Supplement 
(the malacological portion of which will be edited by Major Godwin-Austen) will be 
accumulated, and to further that design collectors are earnestly requested to forward spe- 
cimens to the English Editor, to the care of his publishers, Reeve and Co. 
