BOTANY 



Ceramiace.^ (continued) — 

 Ceramium diaphanum, Roth. 



— gracillimum, GrifF. and Harv. 



— nodosum, Katz. 

 Griffithsia equisetifolia, Ag. 



— simplicifilum, Ag. 



— setacea, Ag. 

 Callithamnion plumula, Lyngb. 



— turneri, Ag. 



— pluma, Ag. 



- — tetricum, Ag. 



— hookeri, Ag. 



— roseum, Lyngb. 



— byssoideum, Am. 



— polyspermum, Ag. 



— fasciculatum, Harv. 



— borreri, Ag. 



— thuyoideum, Ag. 



— pedicellatum, Ag. 



— rothii, Lyngb. 



— daviesii, Lyngb. 



CHLOROSPERMEjE 



Siphonaceje 



Bryopsis plumosa, Ag. 



— hypnoides, Lamour. 

 Cladophora pellucida, KUtz. 



— diflfusa, Harv. 



— rupestris, Kg. 



— Istevirens, Kiitz. 



— flexuosa, GrifF. 



SiPHONACEi^ {continued) — 

 Cladophora gracilis, GrifF. 



— refracta, KUtz. 



— albida, Katz. 



— lanosa, Kotz. 

 - — arcta, Kutz. 



— flavescens, Kg. 



— fracta. Kg. 



Rhizoclonium riparium, KUtz, 

 Conferva linum, Roth. 



— tortuosa, Dillw. 



— melagonium, Web. and Mohr. 



— aerea, Dillw. 



— collabens, Ag. 



— youngana, Dillw. 

 Enteromorpha cornucopiae, Hook. 



— intestinalis, Link. 



— compressa, Grev. 



— clathrata, Grev. 



— percursa, Hook. 

 Ulva latissima, Linn. 



— lactuca, Linn. 



— linza, Linn. 

 Porphyra laciniata, Ag. 



— vulgaris, Ag. 



Bangia fusco-purpurea, Lyngb. 



OsCILLATORIACE^ 



Rivularia atra. Roth. 

 Calothrix confervicola, Ag. 



— scopulorum, Ag. 

 Lyngbya flacca, Harv. 



DIATOMACE^ 



This extensive and interesting Order has received much attention in 

 Norfolk having been studied for many years by Thomas Brightwell, 

 R. Wigham, J. Bleakley, H. G. Glasspoo'le and W. K. Bridgeman and 

 others, and especially by Frederic Kitton, Hon. F.R.M.S., a speciaUst of 

 more than European fame. Mr. Kitton published papers on the distri- 

 bution of this Order in the county in the Transactions of the Norfolk and 

 Norwich Naturalists' Society, and he drew up a complete list for Mason's 

 History of Norfolk in which he enumerated 65 genera and 310 species 

 with full account of the localities in which they had been found, which 

 may be summarized as follows : 



' The system of classification adopted is, with a few slight excep- 

 tions, that of Prof. H. L. Smith, of New York.' 



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