THE ALG.E OF GUERNSEY, 381 



Melobesia COrtieiformiS, Kutz. On Rhod. palmata and on stems of Clad. 



pellucida. Fermain. Cobo. Petit Bot. L'Ancresse Bay. 

 M. membranaeea, Lam. Fermain, on Rhod. palmata. 

 M. verrueata, Lam. Fermain. Cobo. Vazon. 

 M. Le Jolisii, Bosan. On Zostera. Vazon. Petit Port. 

 M. pustulata, Lam. Cobo. Fermain. Petit Port. 

 M. Laminarise, Cm. Fermain. Bordeaux. 

 M. COPallinse, Cm. Petit Bot. 

 M. Sp. I have found at Petit Bot and also at Vazon a species approaching 



M. cystoseira?, Hand-, but it has not yet been satisfactorily determined. 

 Lithophyllum lichenoides, Phil. (Melobesia). Common. 

 L. Lenormandi, Bosan. Common. 

 L. expansum, Phil. Fermain. Bordeaux. L'Ancresse Bay. Vazon. 



Xew to Britain. 

 Lithothamnion polymorphum, Ares. (Melobesia). Common. 

 L. intermedium, Kjelhn. Bordeaux. Petit Bot. Vazon. A very recent 



addition to the British flora. 

 Corallina Officinalis, Linn. Common. 

 C. squamata, Ellis. Common. 

 C. rubens, Ellis. (Jania). Rather common. 

 C- COrniculata, Ellis. Cobo. Petit Bot. Rocquaine. 



FRESH- WATER ALGiE. 



PleurocoCGUS vulgaris, Mmeg. Common on tree trunks and shaded 



walls. 

 GlseocystlS rupestris, Bab. At the foot of the cliffs at Petit Port. 

 POPphyridium eruentum, Nag. Common on damp ground and at the 



base of walls. 

 Rhaphidium faleatum, Bab. Grande Mare. 

 ChlOFOeoccum gigas, Grun. Grande Mare. 

 Seenedesmus obtUSUS, Key en. Grande Mare. 



S. quadrieauda, Breb. Abundant iii a water-tank in my greenhouse. 

 PediastPUm elliptieum, Balfs. Grande Mare. 



P. Bopyanum, Turp. Saints' Bay Valley, abundant. Pool by Fort Doyle. 

 CcelastPUm sphsePieum, Nag. Grande Mare. 

 ChaPaeium OPCithoeephalum, Br. Saints' Bay Valley, on alga?. 

 Zygnema CPUCiatum, VaeUh. Grande Mare. 

 Z. anomalum, Balfs. Grande Mare. 

 SpiPOgyPa bellis, Hass. Grande Mare. 

 S. pOPtiealis, Vauch. Roadside near Vazon. 

 MeSOeaPpuS nummuloides, Hass. Grande Mare. 

 VauehePia sessiliS, Vauch. Moulin Huet Valley. 



Confepva bombyeina, Ag. Moulin Huet. 



CladophOPa glomepata, Linn. In streamlets near Ivy Castle and near 



Hougue du Pommier. 

 Bulboehsete setigepa, Ag. On submerged reed stems, Grande Mare. 

 B. pygmsea, TTittr. Grande Mare. 



UlothPix Padieans, Kutz. Base of shaded walls about St. Martin's. 

 ChPOOlepUS aUPeuS, Linn. Common on old walls and tree trunks. 



