136 The Irish Naturalist. 



Vertigo alpestris, Alder. 



— — — — V? — — — — — — XII. 



The occurence of this typically alpine species in Ireland practically 

 rests on the record of a single specimen taken at Coleraine (14), Mr. 

 Hogan's supposed discovery of the species in Co. Dublin is very doubt- 

 ful, and was not confirmed by later observers. I have never seen an Irish 

 specimen. 



Foreign Distribution. — Very local in the north of England, Scan- 

 dinavia, central and southern Germany, the Alps up to 6,000 feet, Hungary, 

 and Transylvania, north Russia, Siberia, Alaska, and Canada. 



Vertigo moulinsiaua, Dup. 



This species has only once been taken near Roundstone, Co. Galway, by 

 Mr. Jeffreys (8), and by mj'self on the Aran Islands. The V. lilljehorgi 

 of Westerlund seems to me only a variety of this species. 



Foreign Distribution. — South-west England, France, central Ger- 

 many, south Scandinavia, Denmark, Switzerland, and north Italy. 



Vertigo pygmaea, Drap. 

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



This is the commonest of the Irish Vertigos, and is often found in very 

 dry places. 



Foreign Distribution. — Great Britain, south Scandinavia, Denmark, 

 German}', Russia, Caucasus, Austria, Switzerland, Italy, France, Sicily, 

 Spain, Portugal, and Azores. 



Vertigo substriata, Jeff, 

 — — — — V. VI. VII. VIII. — — — XII 



Living specimens of this species have ver}^ rarely been taken, but I 

 picked out over a dozen dead shells from a recent deposit found by Mr. 

 Praeger near Bundoran, and it occurs in a similar way near Dublin. 



Foreign Distribution. — North England and Wales, Scandinavia, 

 west Russia, north and south Germany, Austria, and Tyrol. 



Vertigo antivertigo, Drap. 

 I. — III. IV. V. — VII. VIII. IX. — — XII. 



Thompson (15) referred to this species as V. jx^lustris (Leach), which 

 name although more recent is very expressive, as the species is generally 

 found in marshy places. 



Foreign Distribution. — Great Britain, south Scandinavia, Germany, 

 Austria, Transylvania, Caucasus, Turkestan, Switzerland, Italy, Sicily, 

 France, Spain and Portugal. 



Vertigo pusilla, Miiller. 

 I. — — — V. VI. VII. — _ — — XII. 



Mr. Praeger obtained this very rare species in the deposit above 

 referred to. Although it is extremely likely that the species is still living 

 there, only dead shells were found. 



Foreign Distribution. — England and Scotland, south Scandinavia, 

 France, Belgium, Germany, Austria, Transylvania, Caucasus, north Italy, 

 Switzerland. 



