BOTANY 



CERAMIACEiS {continued) — 

 Ceramium diaphanum, Roth. 



— gracillimum, Griff, and Harv. 



— nodosum, Kutz. 

 Griffithsia equisetifolia, Ag. 



— simplicifilum, Ag. 



— setacea, Ag. 

 Callithamnion plumula, Lyngb. 



— turneri, Ag. 



— pluma, Ag. 



— tetricum, Ag. 



— hookeri, Ag. 



— roseum, Lyngb. 



— byssoideum, Arn. 



— polyspermum, Ag. 



— fasciculatum, Harv. 



— borreri, Ag. 



— thuyoideum, Ag. 



— pedicellatum, Ag. 



— rothii, Lyngb. 



— daviesii, Lyngb. 



CHLOROSPERMEiE 



SlPHONACEi* 



Bryopsis plumosa, Ag. 



— hypnoides, Lamour. 

 Cladophora pellucida, KUtz. 



— diffusa, Harv. 



— rupestris. Kg. 



— laetevirens, Kutz. 



— flexuosa, GriflF. 



SiPHONACEit [continued) — 

 Cladophora gracilis, GrifF. 



— refracta, Kutz. 



— albida, Kutz. 



— lanosa, Kutz. 



arcta, Kutz. 



— flavescens. Kg. 



— fracta, Kg. 



Rhizoclonium riparium, KUtz. 

 Conferva linum. Roth. 



— tortuosa, Dillw. 



— melagonium, Web. and Mohr. 



— aerea, Dillw. 



— coUabens, 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 fiisco-purpurea, Lyngb. 



OsCILLATORIACEiE 



Rivularia atra, Roth. 

 Calothrix confervicola, Ag. 



— scopulorum, Ag. 

 Lyngbya flacca, Harv, 



DIATOMACEiE 



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. Glasspoole and W. K. Bridgeman and 

 others, and especially by Frederic Kitton, Hon. F.R.M.S., a specialist 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 drev^ 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.' 



Amphora, Ehrenberg 

 Cocconema „ 

 Cymbella, Agardh . 

 Encyonema, KUtzing 

 Mastogloia, Thwaites 

 Navicula, Ehrenberg 

 Scoliopleura, Grunow 

 Brebissonia ,, 



Stauroneis, Ehrenberg 



6 species Amphipleura, KUtzing . 



4 „ Schizonema, Agardh 



2 „ CoUetonema, Brebisson . 



2 „ Berkeleya, Greville . . 



3 „ Stictodesmis „ . • 

 72 „ Amphiprora, Ehrenberg 



3 „ Pleurosigma, Smith . . 



I „ Toxonidea, Donkin . 



8 „ Rhoikosphenia, Grunow 



69 



I 



3 



3 

 I 



I 



6 



14 

 2 

 I 



species 



