LN ERO DU; CTL ON, 
In issuing the First Part of ‘Land and Freshwater Mollusca 
of India,’ the undersigned is attempting to carry out what 
the editors of the ‘ Conchologia Indica’ express a hope of at 
the end of their Preface. They say that work was never in- 
tended to be exhaustive, but to assemble in one book species 
which were dispersed in scores of other volumes. I can 
hope to do but little more. 
But the ‘ Conchologia Indica’ was brought to an end 
before the editors had exhausted all the known species from 
India; and since then a very large number of new forms have 
been discovered in that vast country, with its varied climate 
and conditions, and where every year new areas are visited 
by the naturalist and collector. Although I have published 
many new species brought together by myself, there are still 
many left in my collection; while H. F. and W. T. Blanford, 
Col. Beddome, W. Theobald, Geoffrey Nevill, Col. Main- 
waring, Dr. Hungerford, Dr. Townshend, Professor J. Bayley 
Balfour in Socotra, Messrs. M. T. Ogle, A. Chenneil, W. 
Robert, and H. Godwin-Austen have added many an addi- 
tional species to the list, so that there is no lack of 
material. With the aid of the above gentlemen and others 
I hope to make this supplementary work as valuable as its 
predecessor. 
Mr. W. T. Blanford, in a late paper in the ‘Journal of 
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