194 ME. W. WEST ON THE FRESHWATER 



Yar. ABTJNDAys, Kirchn. [S. quadricauda, Breb., var. /3, 

 Balfs {Brit. Desm. p. 190. tab. 31. fig. 12 y).] 

 I. Lough Shannacloontippen. — II. Lower Lake o£ Killarney. 



5. Scenedesmus AKTENKATUS, Breb., in Ralfis, Brit. Desm. 

 p. 222, tab. 35. fig. 27. 



I. Creggan Lough; Boy Lough; near Oughterard; Lough 

 Shannacloontippen. — II. Lough Gruitane. 



6. S. ACTJTUS, Met/en. (Balfs, Brit. Desm. p. 191, tab. 81. 

 fig. 14.) 



I. Near "Westport ; Lakes E. of Lough Bofin; Ballynahinch ; 

 Derryclare Lough ; Letereen, Shindilla, Nabincka, and Aunierin 

 Loughs; Lakes, Clifden to Boundstone. — II. Lough Gruitane; 

 Upper and Lower Lakes of Killarney ; Clogerheen ; Glengarrift ; 

 Cloonee Lough ; Adrigole ; near Lough Brin. 



Var. obliquus, Bahh. (Fl. Eur op. Alg. iii. p. G4.) [S. ob- 

 liquus, Kuetz.~\ 

 I. Creggan, Derryclare, and Nabincka Loughs ; Letereen 

 Lough. — II. Carrantuohill. 



Var. dimorphus, Balh. (I. c). [S. dimorphus, JLuetz.] 

 I. Lough Shannacloontippen. — II. Lough G-uitaue. 



fl. Polyedrium minimum, A. Br. [P. Pinacidium, Beinsch.] 

 I. Lakes, Clifden to Boundstone ; Oorid Lough ; Derryclare 



Lough. 



Naeg. (Balh. Fl. Eur op 



(PI. XVIII. fig. 15.) 

 Lat. 30-35 fi. 

 I. Moher Lough. — II. Lower Lake of Killarney. 



f3. P. catjdatum, Lagerh. (Bidrag till Sver. Alg. Fl.) [1 • 

 pentagonum, Beinsch."} 



I. Near Westport ; Lakes east of Lough Bofin. 



4. P. longispintjm, Bahh. (Fl. Europ. Alg. iii. p. 62.) 

 I. Baheh Loughs. 



5. P. enorme, De Bary. (L. c. p. 63.) 



I. Near Westport.— II. Cromagloun ; Sugar Loaf Mt. ; near 



Lough Brin ; Castletown ; Glengarriff. 



