I04 YORKSHIRE NATURALISTS' UNION. 



Sphseria mammaeformis Pers. Scarborough. G. E. M. 



S. herbarum Pers. leguminum. Bulmer. G. E. M. 



S. rubella Pers. Scarborough and Bulmer. G. E. M. 



S. acuta Moug. Scarborough. G. E. M. 



S. rostellata Fr. Scarborough. G. E. M. 



Stigmatea robertiani Fr. Scarborough, G. E. M. 



Saltaire. H. T. Soppitt. Gordale. W. West. 



Dichsena strobilina Fr. Castle Howard. G. E. M. 



It is due to Mr. Massee to say that some of the commoner 

 species contained in his lists have been purposely omitted. 



ALG^. 



None of the following species have been recorded before in 



our Transactions : — 



Batrachospermum vagum Roth. 



Kirkstall. Abbott, Emsley and Turner. 



Draparnaldia glomerata Vauch. Roundhay. 



Conferva floccosa Ag. Baildon. W. West. 



Chapel AUerton. Abbott, Emsley and Turner. 



Chantransia Hermann! Roth. Baildon. W. West. 



Ulothrix mucosa Thur. Bramhope, Roundhay, & Adel Bog. 



Abbott, Emsley and Turner. 



Cladophora crispata Roth. 



Common. Abbott, Emsley and Turner. 



Stigeoclonium protensum Dillw. Wibsey. W. West. 



Burley. W. Nuttall. Farnley. Abbott, Emsley & Turner. 



Zygnema cruciata Ag. 



Bramhope. Abbott, Emsley and Turner. 



Z. Ralfsii — ? Bramhope. Abbott, Emsley and Turner. 

 Spirogyra communis Hass. Adel. A., E., & Turner. 

 S. pellucida K. Hunslet. Abbott, Emsley and Turner. 



Trans. Y.N.U., 1879 (pub. ISSl). Series E 



