220 LVXD AXD FRESHWATER 



" The animal is whitish or pale fleshy grey, sliglitly darker on 

 the head and on the pedicles and tentacles ; mantle white in young, 

 grey near the edge in older specimens ; posterior end of foot often 

 tinged grey. 



" Hab. The species is very common on the limestone hills to the 

 east and south of Moulmein." 



There have been many causes for the great delay in bringing out 

 another part of this work, no less than seven years having slipped 

 by. I much regret this; the only excuse I can offer is that over 

 the causes I have had but little control. 



In the period between 1882 and 1888, that of Vol. I., my time 

 was much more my own, and I could work with some degree of 

 regularity. In later years it has only been now and then that I 

 could find time for the examination of material that came to hand, 

 and some of this time was given to the preparation of papers for 

 scientific journals treating of important or little-known genera. The 

 new material has been so large in one family aloue,the Zonitidae, that 

 1 have deemed it best to continue working at species of the numerous 

 genera it contains, in preference to taking; up genera of the fresh- 

 water forms, the morphology of which is so well known, although 

 of the Indian genera, both among the Gasteropoda and Pelecypoda, 

 very much has to be done specifically. 



I must here refer to one who took a great interest in this work : 

 Dr. William T. Blanford, C.I.E., F.E.S., &c., who passed away on 

 the 23rd of June, 1905, at the age of 72. I had enjoyed his help 

 and friendship since 1864, and had it not been for his assistance 

 and that of his brother Henry this work would never have been 

 entered upon. They afforded the right helping hand just at the 

 time I began to seriously collect. 



From 1863 onwards I was in correspondence with them, ex- 

 changing specimens and gaining knowledge. When friendships 

 such as these, cemented by a mutual bond of interest in jj^atural 

 History, are brought to an end, the void can never be filled, the 

 loss is daily felt. 



Of William Blanford"s career in the Indian Survey and the work 

 he achieved, I would refer the reader to the Obituary Notices which 

 appeared in many of the Journals of Scientific Societies. 



Blanford had a vast knowledge of the Mollusca of India, and of 

 their distribution particularly ; it was, in fact, the first Natural 

 History investigation undertken by him in the field on his first 

 arrival in India, and eventually his duties led him to see the greater 

 part of that country with Persia and Abyssinia. It was the last 

 work he was engaged upon, in_ connection with the 'Fauna of British 

 India' series. It is much to be deplored that he was not spared to 

 complete what he had begun, for with Blanford's death a vast store 

 of knowledge died also, which would have found a place in that 



