138 The Irish Naturalist. August, 



in other sections of this wonderfully complex and beautiful 

 group of marine organisms. 



It may be that the high tolerance of fresh water shown 

 by this Dubhn Bay Pectinaria depends on the low salinity 

 of the estuarine waters it inhabits, where the outflow of the 

 Liffey mingles with the waters of the Irish Sea. On our 

 western coast Mr. Southern fmds this species to be common 

 in Blackscd Bay.^ It has also been found in Ballinakill 

 Harbour ; but the present appears to be the first record 

 for East Ireland. Judging from the descriptions given of 

 the Pectinaria helgica found by Cunningham and Ramage 

 on sandy fiats at Granton on the Firth of Forth^ and by 

 Hornel " in immense numbers " on the sands skirting the 

 Lancashire and Cheshire coasts,^ it would appear that 

 both records should be referred to the present species, 

 P. Koreni (Malmgren). 



Sandycove, Co. Dublin. 



IRISH SOCIETIES. 



DUBLIN NATURALISTS' FIELD CLUB. 



June 30. — Excursion to Glenasmole. — The midsummer outing of the 

 Club was favoured by perfect weather and was in every way most successful. 

 Starting in drags from Terenure about 11.30, before one o'clock the party 

 reached the entrance to the Glen and the grounds of the Rathmines 

 water-works, where a reinforcement of cj'^clists brought the strength of 

 members and visitors up to a total of 21. From the caretaker's lodge, 

 above the lower reservoir, where the drags were dismissed, the party 

 pushed up the glen on foot and crossing to its eastern side by the embank- 

 ment of the upper reservoir reached the moist hill pastures around the 

 old burial ground of Saint Anne's about half-past two. Here the botanists 

 got to work at once, and the results of an hour's collecting over a small 

 area were enough to prove the great richness of the ground. No less than 

 seven species of orchids were found, some of them in abundance. First 

 came the ubiquitous Spotted Orchis (0. maculata), varying in all shades 

 from pure white to bright pink, then the Twayblade [Lister a ovata), the 



1 Clare Island Survey. Part 47, p. 130. Proc. R. I. A., 1914. 



*Polychaeta Sedentaria of Firth of Forth. Trans. R.S. Edirb., 

 xxxiii., p. 657. 



* Polychaeta of L.M.B.C. District. Trans. Liverpool Biol. Soc, vol. v., 

 pp. 259-O0. 



