lo4 Proceedings of the Royal Irish Academy. 



Amcmroiius fenestralts, Strcem. 



Cini/lo atrox, Bl. (Spid. G. B. I.). 



Ulster, Connauglit, Munster, Leinster. 



This is one of tlie most abundant and widespread of Irish spiders, 

 occurring from the counties of Antrim and Londonderry to Skibbereen 

 and Baltimore in the county of Cork ; from Dalkey Island off the 

 county of Dublin to Inishmore and Aran in Galway Bay. Specimens 

 of all ages are to be found at all seasons of the year. It is a common 

 spider in Scotland (recorded from Sutherlandshire) and northern 

 England, but becomes very rare in the south, a remarkable fact seeing 

 that it occurs throughout France, as well as in Sweden, Germany, 

 Austria, Hungary, Croatia, and northern Italy. 



Amaurohius siniilis (BL). 



Cinijio siniilis, Bl. (Spid. G. B. I.). 



Ulster, Connaught, Munster, Leinster. 



This species is very common and generally distributed oyer Ulster 

 and Leinster; usually, though not universally, found in houses and 

 outbuildings. In Connaught and Munster it is decidedly scarcer than 

 A. fenestralis. The only western and southern localities known to me 

 are Ballymote, county of Sligo ; Clonbrock and Roundstone, county 

 of Galway; Skibbereen, county of Cork; "Waterville, county of Kerry. 

 Adults occur all the year round. It is a common species in the south 

 of England, and ranges north at least to Oban and Inverness. It is 

 also generally distributed in France, is recorded from north-western 

 Spain, and has occurred at Hamburgh but it seems absent from the 

 Scandinavian, Austrian, and Hungarian faunas. It may probably be 

 regarded as a member of the Lusitanian fauna, which has maintained 

 its ground throughout the British Isles by taking to an indoor life. 



Amaurohius ferox (Wick.). 



Cinijio ferox and C. mordax, Bl. (Spid. G. B. I.). 



Ulster, Munster, Leinster. 



This spider is not scarce in and around Dublin, nor indeed in 

 Leinster generally. Specimens have been taken at Drogheda, Lis- 

 mullen, county of Meath, and Borris, county of Kildare. In the 

 south-west the only localities known to me are Skibbereen, county of 

 Cork ; Kenmare and Caragh Lough, county of Kerry ; while in Ulster 

 it has occurred at Armagh, Poyntzpass, and Craigdarragh, county of 

 Down. Adults are found in April, May, and August. A common 



1 According to a note in Mr. Workman's Irish list, but it was possibly intro- 

 <3ucecl there, as it is omitted from Herr Bosenberg's recent Hamburg list. 



