T905. Notes. 247 



A new Liverwort from Ireland 



lu the fournal of Botany for October, Mr. W. H. Pearson describes and 

 figures a new species of Plagiochila, whicli lie names P. killarmensis, which 

 was discovered by him last June growing on a moss-covered stone close 

 to Tore Cascade, Killarney. 



Artemisia maritima — a new station for Co- Dublin. 



In July last this rare species turned up quite unexpectedly iji a new 

 County Dublin station, at the shore end of the Cardy Rocks, about a 

 mile north of Balbriggau, where it grows in some quantity on the top of 

 a low reef hardly five feet above tide mark. I had passed within a 

 stone's throw of this station fully half a dozen times while engaged in a 

 botanical survey of the county without noticing the plant, and should 

 have passed it again on this occasion had my eye not been caught by a 

 single tall budding spike. The Artemisia is admirably protected from 

 discover}^ by association here with a common lichen, closely resembling 

 it both in colour and in stature. 



N. COI,GAN. 



Sandycove, Co. Dublin. 



ZOOLOGY. 



Irish Fresh-water Sponges. 



Dr. Hanitsch, in his paper on "The Freshwater Sponges of Ireland " 

 {Irish Nat., iv., 1895), noticed that Etispongilla laaisti is had been found in 

 Camlough River, Co. Armagh, and at Killakeen, Co. Cavan ; and Hetero- 

 meyenia Ryderi in Lough Doon, Co. Kerr}-. Since then, specimens of 

 these sponges have been received at the Dublin Museum from various 

 parts of the country. 



Eiisporigilla iacustris has been found in the following localities :— Lough 

 Neagh ; Woodburn, Co. Antrim ; Portarlington ; Lough Carrowbeg, Co 

 Mayo ; and Lough Corrib. This sponge thus seems to be as widel}- 

 distributed throughout the country as Dr. Hanitsch predicted. Hetero- 

 meyenia Ryderi has been found in Lough Eagher, Co. Kerry (see Irish 

 Nat., viii., 1899, p. 217), and Loughs Fee and Ballynakill, Co. Galway. 



Jane Stephens. 



Dublin Museum. 



Psithyrus campestris in Co. Carlow. 



Referring to Mr. Halbert's note on the above {supra, pp. 198-9), I have 

 taken this Psithy7'tcs 'he.r& in considerable numbers. I have also taken a 

 few females of P. vestalis, which seems to be much less common here. 



Fenagh House, BagnalstOwn. 



Denis R. Pack-Beresford. 



