160 Proceedings of the Royal Irish Academy. 



Though I have received it from only six localities, these are widely 

 separated : Portrush, county of Antrim ; Roundstone, county of 

 Galway ; Cloonee Lough, county of Kerry ; Skibhereen, county of 

 Cork ; North Bull, county of Dublin ; and Drogheda, county of Louth. 

 Adult in April and May ; also in July and August. It seems to be a 

 scarce spider in Great Britain, but has occurred in Dorset and at Oban 

 in Scotland. Abroad it is found in France, Germany (Hamburg), 

 Austria, and Hungary. The genus is characteristic of the Mediter- 

 ranean region, several, species extending their range to the Atlantic 

 islands, and others being found in the tropics. 



Pedanostethus lividus (Bl,). 



Neriene livida, Bl. (Spid. G. B. I.). 



Ulster, Connaught, Munster, Leinster. 



This is a common species, apparently spread over the whole country, 

 and ascending the mountains to over 3000 feet. Counties of Antrim, 

 Derry, and Donegal, to Glandore, county of Cork, and Glencar and 

 Derrynane, county of Keriy; Dublin to Achill Island, county of Mayo; 

 and Leenane, county of Galway. Adults have been found in all 

 months from March till JS'ovember. It is universally distributed in 

 Great Britain (Dorset, Orkneys) ; and, according to Simon, is spread 

 over the whole of Europe, occurring also in Siberia and in North 

 America. 



TJieonoe mhiutissima (Cb.). 



Walclcenaera minutissima, Cb. (Spid, Dorset). 



? Theonoe filiola, Simon (Arach. France). 



? Coressa minutissima^ Simon (Hist. Nat. Araignees). 



Onesinda minutissima, Cb. (1895). 



Ulster, Connaught. 



This tiny spider is possibly widely distributed in Ireland, but I 

 have as yet only seen two females — one taken at Aa^dara, county of 

 Donegal, by Rev. W. F. Johnson, in July, 1889, and shown at the 

 Dublin Microscopical Club (1896) ; the other on Leenane Mountain, 

 county of Galway, by Mr. J. N. Halbert, in April, 1897, when 

 collecting for the B. I. A. Flora and Fauna Committee. 



There can, I think, be no doubt that the genus Onesinda, which 

 Mr. Cambridge established a few years ago for the reception of this 

 minute spider, is identical with Theonoe of Simon — the convex 

 sternum, the high clypeus, the strongly inclined maxillas, and the 

 globular abdomen being characteristic of both descriptions. In all 

 probability the present species is identical with Simon's T. filiola, 



