CLOSTKIMI'M. 



side, Towie, near Alforcl, Birse, and Birsemore, Aber- 

 deen ; Loch of Park, Clunie, Cainmie, Kincardine ; 

 Buchanty, Perth; near Tobermory in Mull, Argyll 



(Ifolf cj" 7,W//). 



(u'lHjr. Distribution.- Grerm&ny. Austria and Galicia. 

 Hungary. Sweden. Poland. W. Africa (var.). Brazil. 



We- liiivo not seen the typical form of this species. 

 Var. major Racib. (PI. XX, fig. 19.) 



Cl. i'itxi11in b. uni/or Racib. Norm. Desm. Polon. 1885, p. 03; De Toni, 

 Syll. Alg. ISM), p. <S20 ; West & G. S. West, Alga-fl. Yorks. 190<>, ]. .",1, 

 CL jiiixillinii j8 m<ijf>r It<>y. & Hiss. Scott. Desm. 1S94, p. 21S. 



Larger than the typical form ; terminal vacuoles 

 with four or five moving granules. 



Length 8(3-100 p ; breadth 13-10 /*. 



ENGLAND. Cocket Moss, near Giggleswick, W. 

 Yorks ! Mickle Fell, N. Yorks ! 



SCOTLAND. Glen Callater, Corrie of Loch Kandor, 

 Aberdeen ; at the " Reeky Linn " on the Isla, Forfar 



( >'< o/jr. Distribution. Poland. 



Var. monolithum Wittr. (PI. XX, figs. 20-24.) 



CL pusillum var. monolithum Wittr. in Wittr. & Norclst. Alg. Exsic. issii, 

 no. 836; De Toni, Syll. Alg. 1889, p. 820; Nordst. Index Desm. is'iii, 

 p. 213 ; West & G. S. West, Notes Alg. Ill, 1903, p. 9 (sep.). 



Cells less curved, frequently with a faint meditm 

 constriction ; terminal vacuoles with only one moving 

 granule. 



Length 30-48 /A; breadth 9-10 p. 



ENGLAND. - - Gurnard's Head, Cornwall, on damp 

 ground ! 



Geogr. Dis 1 1 -il> 1 1 1 ion. Austria. 



40. Closterium monotaenium Arch. 



Closteriurn monat;i<ntinn Arch, in Quart. Journ. Micr. Sci. 1876, p. 415 

 Cooke, Brit. Desm. 1880, p. 25; De Toni, Syll. Alg. 1889, p. 849; Nordst. 

 Index Desm. 1896, p. 175. 



Arthrodia mon<:>i;rniu Kuiitze, Revis. gen. plant. 1891, p. 883. 



Cells " small, comparatively stout, curvature slight, 



