756 
Genus Navicula Ehrenberc. 
O 
E. AMBiGUA. Ehv. Whissonsett, Orinesby, Breyclon, Holt. 
E. AMPHISBAENA. (Boiy.) Frequent in all fresh-water localities. 
E”. ANGLiCA. (Pialfs.) Osier Car,'^ Heigbain, Whissonsett, 
Ormesbj'. 
H. ATOMoiDES. (Kg.) Osier Car, Heigliain. 
H. APIS. Ehr. Hunstanton Sands. 
H. APPENDICULATA. (Kg.) Osier Car, Heighaiu. 
K. BACiLLARis. (Greg.) Whissonsett, Ormesby. 
K. BACILLUM. Ehr. First observed as a British species in a 
gathering made at Hiclding in 1807. 
H. Barclayana. (Greg.) Hunstanton, Wells. 
K. Bohemica. Ehr. Ditches at Breydon. 
H. BOREALIS. Ehr. In washings from Moss gathered from the 
trunk of an Elm, Konvich, Hiclding. 
K. BrebissoiVii. (Kg.) Horning Fen. 
K. CANCELLATA. (Donk.) Wells : rare, 
K. CARDiNALis. Ehr. ( = piNNULARiA. Sm.) Hickliiig Broad. 
N. CLUTIIENSIS. (Greg.) Hunstanton, Wells, Breydon. 
K. CRASSINERVIA. (Breb.) Whissonsett, Edgefield, Ormesby, 
St. Faith’s Newton. 
N. CRUciFORMis. (Donk.) Wells, Hunstanton ; frequent. 
N. CRUCICULA. (Sm.) Breydon, Wells, Lynn. 
N. CYPRiNUS. Ehr. Brejulon, Wells, Yarmouth, Hunstanton, 
Lynn. 
N. CUSPIDATA. (Kg.) Whissonsett, Orinesby, Holt, Breydon. 
ihe habitat in the last-named locality was a brackish-Avater 
ditch. It differed from the type form in the sides being 
slightly rounded. 
N. DiDYMA. (Kg.) Hunstanton, Wells. 
N. DiGiTO-RADiATA. (Greg.) Ormesby. 
E. DiSTANS. (Sm.) Stomachs of Noctiluca:-, Yarmouth; Hun- 
stanton, Wells, in sand- washings. 
N. ELEGANS. (Sm.) Yarmouth, in salt-Avater ditches ; Brevdon, 
Wells. 
N. Elginensis. (Greg.) Ormesby, Whissonsett. 
N. ELLiPTiCA. (Kg.) Breydon, Whissonsett, Elordon. 
* TJiis locality is now the .site of the Eastern and Midlands Railway Station . 
