ALGJE OF WEST IRELAND. 145 



Long. 43-47 ft ; lat. 25-28 fi ; lat. isthm. 7-10 /i. 



I. Athry Lough; Ballynahinch; Nacoogarrow Lough ; Lakes, 

 Clifden to Roundstone. — II. Muckross ; Glen Caragh ; Glen- 

 gar riff; Lower Lake of Killarney ; Adrigole ; Carrantuohill. 



ft Forma subrectangllaris. (PI. XX. fig. 21.) 

 Forma semicellulis subrectangularibus ; a latere visis pyramido- 

 oblongis. 



Long. 59 ix ; lat. 30 ix ; lat. isthm. 10 p. 

 I. Derryclare Lough. 



20. Cosmarium GALERITUM, Nord. (Desm. Brasil. I860, 

 p. 209, tab. 3. fig. 26.) 



I. Creggan and Letereen Loughs. 



21. C. ititidultjm, De Not. (Desm. It ah p. 42, tab. 3. fig. 26.) 

 I. Derryclare Lough ; Kyleinore ; Lakes, Clifden to Round- 

 stone. — Lough Guitane ; Sugar Loaf Mt. 



tab. 1. fig. 4.) 

 II. Adrigole. 



Nord. (Nt 



t23. C. Elfyingii, Eaeib. (Nonnul. Desm. Polon. p. 27.) 

 [C. hexagonurn, Elf v. non Nord.] 

 I. Clifden. 



24. C. Phaseolus, Breb. (Ealfs, Brit. Desm. p. 106, tab. 32. 

 fig. 5.) 



I. Near Oughterard ; Roundstone ; Creggan and Nacoogarrow 

 Loughs ; Boy Lough ; near Recess ; Lakes, Clifden to Round- 

 stone ; Ballynahinch; Lough Aunierin. — II. Lough Guitane; 

 Carrantuohill; Cloonee Lough ; Adrigole; Mallow. 



25. C. scenedesmus, Help. (Desm. subalp. p. 101, tab. 7. 

 figs. 28-34.) 



I. Near Westport ; near Recess ; Creggan Lough ; Derry- 

 clare Lough ; Nacoogarrow Lough ; Lough Shannacloontippen ; 

 Boy and Oorid Loughs; Lakes east of Lough Bofin. — II. Muck- 

 ross ; Adrigole ; Upper Lake of Killarney. 



ttForma punctata. 

 F. membrana distincte punctata. 

 I. Derryclare Lough. 



