200 MR. W. WEST OX THE FRESHWATER 



1, Microcystis marginata, Kirchn. (Cooke, Brit. Freshw. 



Alg. p. 212, pi. lzzzvi. fig. 6.) 



1. Lough Shannacloontippen. — IL Cromagloun. 



2. M. protogestita, BabJi. (Fl. Fur op. Alg. ii. p. 52.) 



I. Creggan Lough ; Shannacloontippen, Boy, Nabincka, and 

 Oorid Loughs. — II. Lough Guitane ; "Upper and Lower Lakes 

 of Killarney ; GlengarrifF ; Cloonee Lough ; Adrigole. 



fl. Aphanothece saxicola, Naeg. (Rabli. I. c. p. 63.) 



I. Nacoogarrow Lough ; Loughs Aunierin and Creggan. — II- 

 Carrantuohill. 



1. CcelOSPH^rium Kuetzingianum, Naeg. (Rabh. I. c. p. 55.) 

 I. Aunierin and Oorid Loughs ; Shindilla Lough. 



Class DlATOMACEiE. 



1. Ctclotella operculata, Kuetz. (W. Sm. Brit. Diat. i. 

 fig. 48.) 



1. Derryclare Lough ; Nacoogarrow Lough ; Shindilla Lough ; 

 Clifden.— II. Tore Mt. ; Lough Guitane ; Lower Lake of 

 Killarney. 



2. C Ktjetzingiana, Thto. (W. Sm. I. c. fig. 47.) 



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



1. Melosira yarians, Ag. (W. Sm. Brit. Diat. u. p- &*i 

 tab. 61. fig. 332.) 



II. Lower Lake of Killarney ; Carrantuohill ; Mallow. 



2. M. arenaria, Moore. [Orthosira arenaria, W. Sm. I- <?• 

 p. 59, tab. 52. fig. 33*.] 



II. Closrerheen. 



1. Surtrella linearis, W. Sm. (Brit. Diat. \. p. 31, fig- 58a.) 

 L Near Westport ; Lakes near Eecess. — II. Lough Guitane 

 Lower Lake of Killarney ; GlengarrifF. 



Ei 



II. Lough Guitane. 



2. S. biseriata, Breb. ( W. Sm. Brit. Diat. i. p. 30, fig. 57.) 

 L Near Westport ; Lakes E. of Lough Bofin.— tt & len 

 Caragh ; near Lough Brill ; GlengarrifF. 



