122 MB. W. WEST ON THE FRESHWATER 



Long. 220-300 /i ; lat, 85-10 p. 



I. Ballynahmch. ; Derryclare Lough. — II. Croinagloun. 



10. Closterium gracile, Breb. in Ralfs, Brit. Desm. p. 221. 

 1. Near Westport; Eoundstone ; near Leenane ; Kylemore; 



Ballynahinch ; Lakes near Recess ; Lough Shannacloontippen ; 

 Lough Aunierin ; Shindilia and Arderry Loughs ; near Oughter- 

 ard ; Athry Lough. — II. Adrigole ; near Lough Brin ; Tore Mt. ; 

 Cromagloun ; Upper Lake of Killarney ; Clogerheen ; Grlen 

 Caragh; Sugar Loaf Mt. ; Castletown; Carrantuohilh 



ff Forma gracillima. (PI. XIX. fig. 15.) 

 Forma distincte attenuata, quam forma typica l|plo longius. 

 Long. 440 /x ; lat. 5 /x. 



I. Arderry Lough. 



A form of f. gracillima was observed from Kylemore, with 

 obtuse ends : long. 375-410 yu ; lat. 3*5-4^. 



V 



11. C. Ehrenbeegii, Menegh. (Balfs, Brit. Desm. p. 166, tab. 

 28. fig. 2.) 



II. Carrantuohill. 



12. C. monilifebum, Ehrenb. (Ralfs, I. c. p. 166, tab. 28. 

 fig. 3.) 



Lat. 37-40 ft. 



I. Near Westport. — II. Cromagloun ; Kenmare ; Upper Lake 

 of Killarney. 



13. C Jenneei, Balfs. (Brit. Desm, p. 167, tab. 28. fig. 6.) 

 Lat. 7-8 fi. 



I. Near "Westport ; Creggan and Aunierin Lougbs ; near Lee- 

 nane ; Ballynabinch. — II. Loughs Guitane and Cloonee ; Upper 

 Lake of Killarney? Sugar Loaf Mt. ; GlengarrnT; Glen Caragb. 



1 



14. C. Leibleinii, Kuetz. (Balfs, Brit. Desm. 

 J. fig. 4.) 



Lat. 35-37 fi. 



I. Near Westport ; Creggan Lough, 



Var. /3, Ralfs. {Brit. Desm. p. 167.) 

 I. Bally nabincb. 



15. C. DiANiE, Ehrenb. (Balfs, I. c. p. 168, tab. 28. fig. 5.) 

 Lat. 8-5-12-5 /x. 



