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Vol.. I. JUIvY, 1892, No. 4. 



THK IRISH I,AND AND FRKSHWATKR MOI.I.USCA. 



BY R. F. SCHARFF, PH.D., B.SC. 



{Coutiniied from page 47.) 



GASTROPODA. 



PULMONATA. 



Genu s— H Y a L I N I a . 



The species belonging to this genus are in most text-books united with 

 those of the genus Zonites; but their claim to be placed under the genus 

 Hyalinia has been fully recognised for some time past. This is a very- 

 ancient genus, and must have originated in the palaeozoic period, as it 

 occurs fossli in Canadian Carboniferous strata. 



Hyalinia cellaiia, Miiller. 

 I. II. — IV. V. — VII. VIII. — X. — XII. 



This species is commonly distributed. The large specimens which, 

 according to Thompson (15) have been taken in Dublin, are no doubt 

 referable to the next species, which grows much larger. A single speci- 

 men which I took on Sherkin Islajid, Co. Cork, seems to me to agree with 

 the description of H. pictonica, Bgt., but as was suggested to me by 

 Mr. B. B. Woodward, it may only be an abnormal form of H. cellaria. 



Foreign Distribution. — It is common in Great Britain, and spread 

 over the rest of Europe and Asia Minor, the Azores, Canaries, and Madeira. 

 It is found also in Eastern North America, but is supposed to have been 

 introduced. 



Hyalinia Draparnaudi, Beck. 

 I. — — — V. — — VIII. _ — _ — 



There has been no previous record of this species from Ireland. It is 

 the large shell which the late Mr. T. W. Warren found in Dublin, where 

 it has also since been obtained by Prof G. V. Hart. I myself have only 

 found it on Valentia and the Aran Islands on the West Coast. 



Foreign Distribution. — In England it has only been found in the 

 south-west, and it has a confined distribution in Western Europe ranging 

 from Western Germany over France, Italy, and Corsica. 



A 



