XXXU INTRODUCTION. 



of the Mollusca Department of the British Museum, who was 

 ever ready to place species at our disposal and often added his 

 valuable opinion on the determination or history of the species in 

 hand. The late Professor Alfred Newton and Prof. S. P. Harmer 

 gave every facility for the examination and loan of specimens 

 contained in Benson's typical collection forming part of the 

 McAndrew Collection in the University Museum of Zoology, 

 Cambridge. Colonel R. H. Beddome placed his fine collection 

 and his great knowledge of the Southern Indian land-shells at 

 Dr. Blanford's disposal. I have myself to thank him for many 

 valuable species preserved in spirit. Messrs. John Ponsonby and 

 G. K. Gude's collections have been available for study. I am 

 indebted to Mr. B. B. AVoodward for many suggestions relating 

 to molluscan anatomy as well as to their geological ancestry. 



Much valuable matei'ial, without which the work would have 

 been more incomplete than it is, was received from India collected 

 by Messrs. Edgar Thurston in Madras, the late 0. Collett in 

 Ceylon, as well as H. B. Preston ; in Southern India and Siam by 

 the late W. M. Daly ; in Cachar by P. Ede. The Superintendents 

 of the Indian Museum, Calcutta, Col. A. W. Alcock in the first 

 instance, and more recently Dr. Annandale, have given very 

 valuable aid in collecting and sending home many interesting 

 species properly preserved as well as specimens for comparison. 

 The late Wm. Theobald placed the whole of his valuable collection 

 of spirit-specimens in my hands. 



I sincerely trust that the publication of these two Families, which 

 is only a small portion of the Land-Molluscan Fauna of India, will 

 lead naturalists resident in or visiting that country to collect and 

 study this branch of its Natural Histoi'y : not to be content with 

 collecting the shells alone, but to bear in mind whenever they find 

 the living animal to preserve it and send it, should they not require 

 it for their own examination, to the Indian Museum in Calcutta 

 or to the British Museum at home, where sooner or later it will be 

 available for the investigation of Malacologists. 



H. H. GODWIN-AUSTEN. 



Nore, July 1908. 



EEEATUM. 

 Page 25, fig. 16, Ariophania IcBvipes : transpose letters C and D. 



