346 CENSUS OF THE MARINE MOLLUSCA OF TASMANIA, 



indebtedness to Mr. Charles Hedley for the figures in the text of 

 type-specimens contained in the collections of Miss Lodder and 

 the Rev. H. D. Atkinson. The five plates are reproduced from 

 drawings by Mr. W. L. May, and include the greater number of 

 Mr. Petterd's types kindly placed at our service by him. 



The species of which Tasmanian examples have been studied 

 by us are indicated by an asterisk prefixed to the names; whilst 

 types or cotypes which have been under our examination are 

 indicated by the sign !. 



Some of Tenison- Woods's types are in the National Museum, 

 Melbourne, and though Mr. J. H. Gatliif kindly offered to make 

 a study of them, and the Museum authorities were anxious to 

 afford facilities, yet as the whole molluscan collection is stored, 

 as a consequence of removal from the University, it is not possible 

 to have access to them till a year or more. 



Some species, as a few recorded uy Dunker, without figures, 

 and others by Watson (Challenger Expedition Report) have been 

 assigned to Tasmania; but the type-localities are on the Victorian 

 side of Bass Straits. These we have excluded, excepting those 

 which have on independent evidence a claim to be Tasmanian. 



In the geographic references, East Coast embraces from Swan 

 Island to Cape Pillar, and South Coast from Cape Pillar to South 

 Cape. 



Some estuarine shells have been omitted from this list, as they 

 have already been elaborated by Mr. W. E. Petterd in " Con- 

 tributions for a Systematic Catalogue of the Aquatic Shells of 

 Tasmania" (Proc. Roy. Soc. Tasmania for 1888). 



Not to overburden the Systematic List with a multitude of 

 synonyms, we have restricted the synonymic names to those that 

 have special reference to Tasmanian Conchology or are pertinent 

 thereto. These are submitted for the most part as the result of 

 the comparison of types or of well-authenticated exemplar speci- 

 mens. Moreover, we have relegated the reasons for our dissent 

 from the acceptance of certain names, and other criticisms, to a 

 separate section of our Essay. Our Catalogue of Synonyms 



