6o Larder : Lincolnshire Freshwater Algce. 



Closterium rostratum. 9. Saltfleetby (J. Larder). 



Closterium moniliferum. Saltfleetby (J. Larder). 



Closterium lunula. 6 West. Sturton district (T. S. Smithson). 



Micrasterias denticulata. Sturton district (T. S. Smithson). 



Cosmarium botrytis. Sturton district (T. S. Smithson). 

 9. Saltfleetby (J. Larder). 



Cosmarium Meneghinii. 9. Saltfleetby (J. Larder). 



Cosmarium Turpinii var. Lundellii. Saltfleetby (J. Larder). 



Cosmarium granatum var. subgranatum. Saltfleetby (J. 

 Larder). 



Synedra acus. Saltfleetby (J. Larder). 

 Synedra pulchella. Saltfleetby (j. Larder). 

 Zygnema stellinum. 6 West. Sturton district (T. S. 

 Smithson). 



Spirogyra flavescens. 6 West. Sturton district (T. S. 

 Smithson). 14 West. River Slea, near Sleaford (J. 

 Larder). 



Spirogyra tenuissima. 6 West. Sturton district (T. S. 

 Smithson). 9. Saltfleetby (J. Larder). 14 West. River 

 Slea, near Sleaford (J. Larder). 



Spirogyra condensata. 9. Saltfleetby (J. Larder). 

 Mesocarpus pleurocarpus. 14 West. River Slea, near Slea- 

 ford (J. Larder). ' Not typical,' T. S. Smithson. 



Mesocarpus nummuloides. 6 West. Sturton district (T. S. 

 Smithson). 



Staurospermum quadratum. Sturton district (T. S. Smith- 

 son). 



'Volvox globator. 6 West. Sturton district (T. S. Smithson). 

 2 South. Manton Common (W. C. Brown). 6 East or 13 

 West. Lincoln district (Fairbank Catalogue). 



Pandorina morum. 6 West. Sturton district (T. S. Smith- 

 son). 10 North. 'Jordan's Ponds,' Woodhall Spa (J. 

 Larder). 



Gonium pectorale. 6 West. Sturton district (T. S. Smithson). 



Merismopedia glauca. 9. Saltfleetby (J. Larder). 10 North. 

 Woodhall Spa (J. Larder). 



Lingbya turfora. 6 West. Sturton and Till Bridge (T. S. 

 Smithson). 



Naturalist, 



