Scolopendrium.^ PILICES. 447 



Sea- level in N. Derry and S. Cork. To 1200 ft. in Derry {Flor. 

 N.-JE.) ; to 1400 ft. in Tipperaiy {Hart). 



This species is especially abundant on tte limestone of the 

 BiuTen district where many of the more striking varieties occur. 



CTSTOPTEEIS Bemh. 

 1. C. fragilis Bemh. — Brittle Fern. 



Districts I. II. III. IV. V. VI. VII. VIII.' IX. X. XI. XII. 



Lat. 52°-55i°. Throughout Ireland. Type, British-Highland. 



Damp rocks, and on ■walls ; local. Frt. July-October. 



I. Common on the Kerry moimtains ; R. W. S. At Glengariff 

 {Miss A. Taylor) : Allin's Corh. — II. ]S"ear Millstreet, Cork {More) ; 

 Dunmore East, "Waterford {S. FiUsimons) : Rec. Add. Cliffs 

 above Coumshingan Lake in the Commeraghs : Sart i88^. On 

 Galtymore, Tipperary : Hart i88i. — III. By the Barrow on the 

 flanks of the Slieve Bloom mountains : Hart i88^. — IV. Near 

 Maulin mountain, "Wicklow ( W. Archer) : Cyh. — ^V. Abundant on 

 the Barrow bridge at Monasterevan {Mrs. Coolce Trench) : Rec. 

 Add. §• Hart 1883. — VI. Abundant on the limestone in Burren and 

 in part of Galway {More) : Cyh. — VII. Near Ballymore, "Westmeath 

 {Foot) : Cyi. Sparingly on Eeeper mountain : Hart 1881 y. — 

 VIII. Connemara : Newman 18^0. Twelve Bens and Maam Turk, 

 Galway : Hart 188 j a. Near Cong, both in Galway, and — IX. In 

 Mayo : M. Sf S. i8g6. Common all over the mountains in Ben 

 Bulben district : £. Sf V. i88j. Abundant in several parts of 

 Eoscommon : Foot 186^. — X. Dart mountain, Tyrone {Admiral 

 Jones) : Cyh. Common in the mountainous part of Cavan and 

 Fermanagh : Stewart 1882. — XI. Very local in Donegal, but occurs 

 near Lough Belshade ; at Moynalt ; near Ardara, &c. : Hart 

 1881 P Sf 1886. — XII. Locally abundant, occurring in Down, 

 Antrim, and Derry : Flor. W.-E. Sf S.^R. z8gs- 



To 1800 ft. in Donegal {Hart) ; 800-2000 ft. in Down {S. Sf R.) ; 

 1100-2400 ft. in Mayo {Hart) ; sea-level {R. W. S.) to 3150 ft. in 

 Kerry {Hart). 



Abundant on limestone in many parts of the West, local in the 

 East and South, and very rare ia Cork. 



Far. DBNTATA Hook. — I. Brandon mountain, Kerry {Rev. W. M. 

 Hind) : Cyh. Sf Linton 1886. — X. Frequent, with the type, in Cavan 

 and Fermanagh, west of Lough Erne : Stewart 1882. — XII. Head 

 of Glenai-iff, Antrim ; Moore. 



