Mj&M OF WEST IRELAXD. 155 



(Ed 



brasiliense, Nord. (Er. Wat. Alg. of New Zeal, and Austr. 

 p. 51), in its very different sinus, apex, and other characters. 



63. Cosmaeium orthostichum, Lund. (Besm. Snec. p. 24, 

 tab. 2. fig. 9.) 



I. Ball ynahinch . — II. Grleugarriff. 



64. C. botrytis, Menegh. (Balfs, Brit. Besm. p. 99, tab. 16. 

 fig. 1.) * 



I. Near Westport ; Lough Shindilla ; INTabincka and Creggan 

 Loughs ; Lakes E. of Lough Bofin. — II. Lower Lake of 

 Killarney ; Lough Gruitane ; Mallow ; 8 m. S. of Kenmare ; 

 Grleugarriff. 



ft Var. MEDiOLiETE, nov. var. (PI. XXI. fig. 12.) 



Semicellulae apice subtruncato subretuso glabrato, granulis 



concentrice et radiate dispositis, medium versus parvioribus, ad 



medium glabrae ; a vertice visae elliptieae, lateribus compressis ; a 



latere visse oblongo-ellipticse, lateribus subrectis ; pyrenoidibus 

 binis. 



Long. 65-70//; lat. 55-59 fx ; lat. isthm. 15 /i ; crass. 25-27 ft. 

 I. Lakes, Clifden to Eoundstone ; near Westport ; Nacoo- 

 garrow Lough. — II. Clogerheen. 



65. C. eboracense. West. (Freshcatrr Alger, N. Forks., 



Journ. Bot. Oct. 1889, tab. 291. fig. I.) 

 II. Cloonee Lough ; Kenmare. 



66. C. Turpinii, Breb., var. Lundellii, Gutto. [C. Turpinii, 

 Breb., forma, Lund {Besm. Suec. p. 29).] 



Long. 50-63 ju; lat. 45-62/*; lat. isthm. 19-21 /i ; crass. 

 28-33 ft. 



I. Near Westport. — II. Lower Lake of Killarney. 



t67. C. formulosum, Hoff. in Nord. Besm. frcn Bornholm, 

 p. 194, tab. 6. figs. 6-7. 



I. Lough Aunierin. — II. Cloonee Lough. 



68. C. pr^mobsum, Breb. in Pritch. Infus. ed. 1861, p. 733. 

 I. Near Westport; Lakes, Clifden to Eoundstone. 



