220 Guide to Belfast. 



Sund., and Pardosa prativaga, Koch (Ram's Island, 

 Lough Neagh), Heliophaiius flavipes, Hahn, and H. aipreus, 

 Walck. (Portrush). 



The five species marked with an asterisk are unknown 

 elsewhere in Ireland, and of these Bolyphantes siiluiigripes 

 has never been found anywhere else at all. Styloctetor 

 iroccha — one of the most interesting of the many alpine 

 species that reward the labours of the naturalist among the 

 Mourne mountains — ^has not yet been discovered in Great 

 Britain, while on the Continent is known to occur only 

 among the Tyrolese and Swiss mountains. The male of 

 this tiny spider possesses a remarkable musical organ. ^ 



Phalangidea. — Of the fourteen species of Harvestmen 

 that are known to occur in Ireland, ten have been found 

 within the Belfast district. These are Liobuniim rotundufn, 

 Latr., Z. Blackwallii^ Meade, Phalangiian opilio, Linn., 

 Platybumis corniger, Herm., Megabit mts diadema, Fab., 

 Mitopus morio, Fab., M. alpi?uis, Herbst (Slieve Uonard), 

 Acantholophus agrestis, Meade, A. fridens, Koch, and 

 Nemastoma Iitgiibre, Miiller. Several more species probably 

 await discovery in the district, and O. ep/iippiatus, Koch, 

 which has been taken in Co. Donegal, may certainly be 

 expected to occur. 



Chernetidea. — The only " false scorpions " that are yet 

 known to inhabit the Belfast district are Obisium fuuscorum, 

 Leach, and Chthonius orfhodacfyhis, Leach. 



Acarinida. — A few species of Water Mites (Hydrach- 

 7iidce) are known from the north-east. The following may 

 be mentioned : — Curvipes ?wdafi/s, C. rufus, Limnesia histri- 

 Ofiica, L. maaelafa, L. Kcenikei, Lebertia sp., Hygrobates 

 longipalpis, and Hydi-achia sciitata. All of these are widely 

 distributed forms, and occur in great abundance in Lough 

 Neagh. Several interesting species have been detected in 

 other of our northern lakes, and should be sought for in 

 Lough Neagh, notably a new species — Arrefiunes Kami — 

 recently described from Lough Erne : the neal-est allied 

 species inhabits Scandinavia. 

 G. H. C. 



1 G. H. Carpenter. — The .Smallest of Stridulating Spiders. Natural 

 Science, vol. xii, 1898, pp. 319-322. 



