STAURASTRUM. 167 



WALES. Capel Curig ! (Cooke & Wills). 



SCOTLAND.- -Locality ? 



IRELAND.- -Near Oughterard, Galway ! Mayo and 

 Clare Island ! Carrantuohill, Kerry ! Dublin and Wick- 

 low (Arch.). Xear R. Black water, and south of Lough 

 Neagh, Armagh ! 



C_^J C_- 



Geoyr. Distribution. Germany. Galicia in Austria. 

 Hungary. Servia. Turkey. Norway. Sweden. Born- 

 holm. Finland. Poland. Faeroes. Iceland (form). 

 Greenland. Siberia (var.). India. Burma (form). 

 Australia. New Zealand (form). United States, Brazil, 

 (var.) 



Unfortunately neither specimens nor good drawings of St. 

 Sebaldi Reinsch could be obtained for the purpose of the present 

 work, and apparently the figures reproduced on PI. CXLVIII 

 are not exactly typical. The vertical view is from a drawing by 

 Professor West of an American example, whilst PL CXLVIII, 

 fig. 5 was drawn by the present writer from a mounted prepara- 

 tion of Scottish specimens in the British Museum. West & G. S. 

 West (Alg. Burma,' 1907, p. 221, t. 16, f. 9) give some account of 

 St. Sebaldi, and it is evident from a study of their remarks that 

 PL CXLVIII, figs. 5 and 6, should both be considered atypical 

 in the fact that they lack a lower row of stout spines beneath 

 the apical row of emarginate spinous processes. In the vertical 

 view therefore the lateral margins should be typically spinous; 

 and not smooth. The general form of the specimen on PL 

 CXLVIII, fig. 5 is quite typical, and it is stated by the Wests 

 (loc. cit.) that the lower row of spines is variable both in size 

 and character. Their apparent variability may account for 

 their absence in the figures given. It is interesting to note 

 that Reinsch (' Contr. Alg. Fung.' 1875, t. ix, f. 4) also figures an 

 individual in which the lateral margins are smooth in the end 

 view, showing the absence of the lower series of spines, 



Var. ornatum Nordst. (PL CXLVIII, fig. 7.) 



St. Sebaldi var. ornatum Xordst. Xorges Desm. 1873, p. 34, t. 1, f. 15 ; 

 Cooke, Brit. Desm. 1887, p. 176, t. 61, f. 1 ; De Toni, Syll. Alg. 1889, 

 p. 1220 ; Turn. Alg. East India, 1893, p. 132; Roy & Biss. Scott. Desm. 

 1893, p. 25 ; Schmidle, Beitr. Algenfl. des Schwarzwald u. Oberrheins, VI, 

 1897, p. 23 ; West & G. S. West, Al.ira-fl. Yorks. 1902, p. 106; Alg. X. 

 Ireland. 1902, p. 56 ; Borge, Botan. Xotiser, 1913, p. 50. 



