212 MR. W. WEST ON THE FRESHWATER 



9. GrOMPHOKEMA intbicatum:, Kuetz. ( TV. Sm. Brit. Dint. 



i. tab. 29. fig. 241.) 



I. Near Westport ; Baheh Loughs ; Boundstone ; Ballyna- 

 hinch. — II. Tore Mt. ; Muckross ; Lough Guitane ; near Lough 

 Brin. 



1. Meridion circulire, Ag. (TV. Sm. 1. c. p. 6, tab. 32 

 fig. 277.) 



II. Lower Lake of Killarney. 



2. M. cokstrictcjm, Jialfs. (W. Sm. I c. tab. 32. fig. 278.) 



II. Carrantuohill. 



1. Tabellaria flocculosa, Kuetz. (TV. Sm. I. c. p. 45, 

 tab. 43. fig. 316.) 



1. Glendalough ; near Westport; Moher, Nacoogarrow, Na- 

 bincka, Derryclare, Shindilla, Creggan, and Baheh Loughs; near 

 Leenane; Roundstone. — II. Lough Guitane ; Upper and Lower 

 Lakes of Killarney ; Tore Mt. ; Carrantuohill ; Glen Caragh ; 

 Castletown ; Cloonee Lough ; 8 m. S. of Kenmare. 



2. T. fenestrata, Kuetz. (TV. Sm. I. c. fig. 317.) 



I. Near Westport ; near Oughterard ; Glendalough ; Lakes 

 near Recess, and from Clifden to Roundstone ; Athry, Nabincka, 

 Moher, Baheh, aud Derryclare Loughs; Ballynahinch ; Lough 

 Shindilla; Nacoogarrow aud Arderry Loughs; Roundstone. 

 II. Lougli Guitane ; Tore Mt. ; Sugar Loaf Mt. ; Muckross ; 

 Lower Lake of Killarney ; Cloonee Lough; GlengarrifF: Adrigole. 



EXPLANATION OF THE PLATES. 



a, a\ a" = cellula vel semicellula a fronte visa. 



b, b' = „ „ vertice „ 



= „ „ latere „ 



d = „ „ basi „ 



e 9 e' =zygospora (cum vel siue seraicellulis residuis) 



Plate XVIII. 



Fig. 1. CEdogonium platygnum, Wittr., forma major, West. 400/1. 



2. „ sitecicum, Wittr, 400/1. 



3. n pilosporum, West. 625/1. 



4-5. Zyynema Maspermum, De Bary, forma mrgaspora, West. 400/1 



