1813-1814.] gj 



Six bryologists took part in the North Coast excursion, but 



only one find worth reporting was made during the trip through 



this well-worked region. The rare Moss Pterogonium ornitho- 



podioides was found at Murlough Bay, on the north coast of 



Antrim. 



h. w. L. 



LICHENES. 



With the exception of Canon Lett's paper on the Mosses, 

 Hepatics, and Lichens of the Mourne Mountain District, in 

 which he records 74 species of Lichens,* no contribution of 

 importance has been made to our knowledge of the Lichens of the 

 N.E. of Ireland since the days of David Moore and Admiral Jones. 

 A glance at the "Census of Species" Table, page 227, in Mr. 

 Adams' paper on the Distribution of Lichens in Ireland,! shows 

 that only 174 species are known from sub-province Ut (County 

 Down) and only 186 from sub-province U2 (Counties Antrim and 

 Derry). When these figures are compared with a probable 

 thousand species for Ireland, it will be seen that a great amount 

 of work still remains to be done amongst the Lichens in these 

 counties. This being so, it was to be expected that the material 

 collected during the week, ioth-i7th May, would yield substantial 

 additions to the above figures, and so far as Counties Antrim and 

 Derry are concerned this expectation has been fulfilled. 



The day on which we climbed Slieve Donard was very wet 

 and unpleasant, and there was little time for collecting. Only 4 

 species were added to those already recorded from County Down. 

 However, it was interesting to see a large number of the Lichens 

 mentioned by Canon Lett growing in their native habitat. 

 Lecanora glaucoma, Lecidea rivu/osa, and Rhizocarpon geographicum 



* Proc. R.I. Acad., Series III., Vol. I., 1889. 



t Proc. R.I. Acad., Vol. xxvii., Section B, No. 10, 1909. 



