188 MR. W. WEST OS THE FRESHWATER 



Ord. Pediastrejs. 



1. Pediastbttm angtjlosum, Ehrnb. (Balfs, Brit. Desm. 



p. 187, tab. 31. fig. 11.) 



1. Nacoogarrow Lough ; Shindilla Lough. 



2. P. BoBYAJruu, Menegh. (Balfs, Brit. Desm. p. 187, tab. 31. 



fig. 9.) 



I. Near Westport ; Ballynahiuch.— II. Lough Guitane ; 



Clogerheen ; Kentnare ; Mallow. 



Yar. geanulatum, Babh. (Fl. Europ. Alg. iii. p. 75.) 

 I. Near Westport ; Lakes, Clifden to Rouudstone ; Creggan 

 Lough. — II. Lower Lake of Killarney. 



3. P. bidentultjm, A. Br. (Babh. Fl. Europ. Alg. iii. p. 77.) 



I. Lough Shannacloontippen; Baheh Loughs. 



4 _ 



4. P. constrictijm, Hass. [P. ellipticum, Iialfs, Brit. Desm. 

 p. 188, tab. 31. fig. 10.] 



II. Lower Lake of Killarney. 



fig. 6 d.) 



Kuetz. (Half I 



I. Moher Lough; Derryclare and Creggan Loughs; Lough 

 Shannacloontippen. — II. Upper and Lower Lakes oi' Killarney. 



I 



6. P. tetras, Rolfs. [P. Ehrenbergii, A. Br.~\ 

 Forma a. Dispositio cellularum 4. 



I. Lakes, Clifden to Eoundstone ; Clifden; Derryclare Lougb ; 

 Lough Aunierin ; Lough Shannacloontippen. — II. Lough Cmi- 

 taue ; Upper and Lower Lakes of Killarney ; near Lough Brin ; 

 Glengarriff; Cloonee Lough ; Mallow. 



Forma c. Dispositio cellularum 1 + 7. 



I. Derryclare, Baheh, and Shindilla Loughs ; Lough Slianna- 

 cloontippen; Clifden; Lakes E. of Lough Bofin.— II. Glen 

 Caragh ; Adrigole ; near Lough Brin. 



Formal. Dispositio cellularum 5 + 11. / 



II. Glen Caragh. . 



* 



* 



7. P. integrum, Naeq. (Rabh. Fl. Europ. Alg. iii. P- ?*•) 



II. Lower Lake of Killarney. 



• 



