Lett— On the Mosses of the Mourne Mountain District. 291 
Olyphomitrium polyphyllum, Mitt. 
(Ptycliomitriuin polyphyllum, Fuerne.) 
On stones in Eosstrevor Eiver, the Deer's Meadow, top of Chim- 
ney Eock Mountain, Slieve Donard, on detached blocks in 
Donard Demesne, on stones among the sandhills at JS^ewcastle, 
Carlingford Mountain, Slieve GuUion : H. W. L. "Warren- 
point, Anglesey Mountain, Eev. C. H. Waddell. Of frequent 
occurrence in the district. 
A^TCECTAI^^GIUM, Hedw 
Ancectangium mougeotii, Lindb, 
(Amphoridium mougeotii, E. and S.) 
The Elack Eocks on Slievenamaddy, summit of Slieve Eignian, 
the Elack Stairs on Slieve Donard, Pigeon Eock Mountain, 
Cove Mountain, in the Glen near the Waterfall and on a 
rock close to the sea at Omeath : H. W. L. Tollymore 
Park : Eev. C. H. Waddell. Eare. 
PLETJEOZYGODOIT, Lindb. 
Pleurozygodon compactum, Lindb. 
(Ancectangium compactum, Sch.) 
Wet rocks at the head of the White Eiver Glen on Slieve 
Commedah, Slievenamaddy : H. W. L. Yery rare, and 
scarce. 
ZYGODOI^, Hook. Tayl. 
Zygodon viridissimus, Dicks. 
On trees in Tollymore Park, and near the village of Eryansford : 
H. W. L. I^ear the waterworks at Eosstrevor : Eev. C. 
H. Waddell. ]N"ot common. 
Zygodon stirtoni, Schpr. 
(Zygodon viridissimus, var. rupestris, Lindb.) 
On the wall of the Eloody Bridge, near ]N"ewcastle : on a dry 
built wall, near Analong : H. W. L. Yery rare. 
