LS) 
“NT Ovui & Oo 
ie'e) 
PLATE 
Navicula amphisbaena 
Bory. 
Navicula amphisbaena var 
subsalina. 
Navicula limosa Kutz. 
3 ,, vargibberula 
a bisulcata Langst. 
me Iridis Ehr. 
. », Var amphi- 
gomphus. 
Navicula Iridis var amphi- 
rhyncus. 
Navicula Iridis var dubia. 
m ,, varundulata. 
a ,, var affinis. 
~ Liber WSm. 
a Bacillum WSm. 
ae laevissima Kutz. 
a obtusa WSm. 
% atomus Naeg. 
,, cocconeiformis Greg. 
,, binodis (Ehr.) WSm. 
,, lepidula Grun. 
Mastogloia Gallica WSm. 
Schizonema Smithii Ag. 
Navicula crucicula Donk. 
Schizonema Grevillei Ag. 
,, ramosissimum Ag. 
18. 
Vanheurckia rhomboides 
(Ehr.) Breb. 
Vanheurckia rhomboides 
var Saxonica Rab. 
Vanheurckia vulgaris 
(Thw.), V.H. 
Amphipleura pellucida 
Kutz. 
Brebissonia Boeckii(W Sm) 
Grun. 
Berkeleya fragilis Grev. 
ne obtusa Grev. 
Scoliopleura latestriata 
(Breb.) Grun. 
Scoliopleura tumida (Breb) 
Rab. 
Scoliopleura \V estii( WW Sm) 
Grun. 
Pleurosigma speciosum 
WSm. 
Pleurosigma Balticum var 
Wansbeckii. 
Pleurosigma Spencerii var 
curvula Grun. 
Cocconeis distans (Greg. ) 
Grun. 
Rhizosolenia calcar-avis 
Schul. 
Rhizosolenia robusta Norm 
