1908.] The British Freshwater Phytoplankton. 



183 



W. and 



Species. 



Staurastrum paradoxum, Meyen 



„ „ var. cingulum, W. and G. S. 



West (Pv) 



„ var. longipes, Nordst. (p) 



pelagicum, W. and G. S. West (P) 



pilosum, Nag 



polymorphum, Breb 



polytricham, Perty 



pseudopelagicum, W. and Gr. S. West (P) .. 



punctulatum, Breb 



Saxonicum, Buln 



Sebaldi, Beinsch., var. productum, W. and 

 G. S. West (Pv) . 



„ var. ornatum, Nordst 



sexangulare (Buln.), Babenh. (p).. 

 ,, var. supernumerarium 



G. S. West (Pv) 



sibiricum, Borge 



sublievispinum, W. and Gr. S. West 



subnudibrachiatum, W. and Gr. S. West (P) 



subgraciUimum, W. and Gr. S. West 



subpygmseum, West 



telif'erum, Balfs 



tetracerum, Balfs 



Tohopekaligense, Wolle, var. trifurcatum, 

 W. and G. S. West 



tumidum, Breb 



verticillatum, Arch 



vestitum, Balfs 



Spondylosimn pwlchrum (Bail.), Arch., var. planum, 

 Wolle (p) 



Sphxrozosma granulatum, Boy and Bissett 



„ Aubertianum, West 



„ „ var. Archerii (Gutw.), W. and 



G. S. West (p) 



„ excavatum, Balfs 



,, vertebratum, Balfs 



Desmidium aptogonum, Breb 



„ coarctation, Nordst., var. cambricum, West (p) 



„ graciliceps (Nordst.), Lagerh 



occidentale, W. and GK S. West (P) 



„ Pseudostreptonema, W. and G. S. West (p) ... 



,, Swartzii, Ag 



Gymnozyga moniliformis, Elirenb 



„ „ var. gracilescens, Nordst 



Hyalotheca dissiliens (Sm.), Breb 



„ „ forma tridentula, Nordst 



,, Indica, Turn, (p) 



,, mucosa, Ehrenb 



„ neglecta, Bacib. (p) 



„ undulata, Nordst 



Volvox aureus, Ehrenb 



Pleodorina californica, Shaw 



Eudorina elegans, Ehrenb 



Gonium pectorale, Mull 



Pandorina Morum (Mull.), Bory 



Chlamydomonas pulvisculus, Ehrenb 



Scottish lakes. 



Orkneys and 

 Slietlands. 



W. and S?W. 

 Ireland. 



Welsh lakes. 



English lakes. 



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