502 [Proc. B.N.F.Q., 



This species is not mentioned in the older manuals, as it was only 

 described by Chodal in 1898. In Messrs. Wests' paper on the 

 Plankton of the Irish Lakes they say that it occurred in prodigious 

 quantity in Lough Corrib. " In damaged colonies the radiating 

 structure of the internal mucus can be readily observed." This 

 was the case with the specimens found at Drumlane. At 

 Belturbet Ranunculus peltatus var. truncatus was found in the 

 river with Potamogeton perfoliatus, and in Drumsillagh Bog, near 

 Butler's Bridge, Rhynchospora alba, Salix pentandra, and Lemna 

 tnsulca. The woods and lake shores at Farnham produced many 

 interesting plants, an abundance of the graceful Carex Pseudo- 

 cyperus, C. acuta, Lysimachia Nummularia, L. vulgaris, Euonymus 

 europcBus, Primus insititia, and Viburnum Opulus. 



Little attention had been given to the Mosses of Co. Cavan, 

 and the following species, which were observed during the 

 excursion, are new records, as they are not noted for county 

 division 30 in the "Census Catalogue of British Mosses"— 

 Ditrichum flexicaule (shore of Farnham lake), Dicranella cervic- 

 ulala, Dichodontium pellucidum (by Farnham lake), and the var. 

 fagimontanum (at Killykeen), Campylopus pyriformis, Trichostomiim 

 crispulum, Weisia curvirostris, Barbula cylindrica, B. revoluta, 

 Orthotrichum affine, O. Lyellii, Webera nutans, IV. nutans var: 

 longiseta (Derrywinny bog), Bryum pallens, Leucobryum glaucum, 

 Polytrichum attenuation, Cinclidotus fontifialoides, Climacium 

 dendroides, Anomodon viticulnsus, Brachythecium populeum var. 

 majus, Eurhynchium lenellum, E. rusciforme, Amblystegium 

 filicinum, Hypnum cupressiforme var. filiforme, Sphagnum cus- 

 pidalum, and ^. medium (Derrywinny Bog). 



No rare Hepatics were met with, the most uncommon species 

 collected being — Marchantia polymorpha, Kantia sprengelii, 

 Aneura latifrons, Cephalozia connivens (all at Killykeen, on the 

 shore of Lough Oughter), Lunularia cruciata (at Kilmore old 

 Churchyard), Cephalozia leucanlha (in Derrywinny Bog), and 

 Madotheca plaiyphylla (in Farnham Wood). 



