A HISTORY OF SUFFOLK 



The following is a list of most of the species known to occur ; a few of the diatoms are 

 those of brackish water : — 



DiATOMACEAR 



Melosira Borreri, Grev. 



— varians, Ag. 



Cyclotella Kutzingiana, Chauvin 



— astraea, Kutz. 

 Cylindrotheca gracilis, Grlln. 

 Tabellaria flocculosa, KUtz. 



— fenestrata, KUtz. 

 Meridion circulare, Ag. 

 Diatoma vulgare, Bory 



— elongatum, Bory 



— Ehrenbergii, forma grandis, 



W. Sm. 

 Fragilaria capucina, Desm. 



— mutabilis, GrUn. 



— construens,var. binodis, Grlln. 

 Synedra Ulna, Ehren. 



— radians, W. Sm. 



— pulchella, Kiltz. 

 Eunotia lunaris, GrUn. 

 Achnanthes linearis, W. Sm. 

 Cocconeis pediculus, Ehren. 



— placentula, Ehren. 

 Navicula serians, Kutz. 



— cuspidata, Kutz. 



• — • Iridis, var. firma, W. Sm. 

 var. producta, W. Sm. 



— elliptica, W. Sm. 



— elegans, W. Sm. 



— limosa, var. gibberula, Van 



Heurck. 



— ambigua, Ehren. 



— Amphisboena, Bory 



— tumens, W. Sm. 



— binodis, W. Sm. 



— pygmaea, KOtz. 



— major, Kotz. 



— 'nobilis, Kutz. 



— viridis, Ktltz. 



— oblonga, Kfltz. 



— peregrina, Kutz. 



— Tabellaria, var. 'acrosphaeria, 



Raben. 



— radiosa, KOtz. 



— acuta. Van Heurck. 



— gracilis, KUtz. 



— digitato-radiata, var. Cypri- 



nus. Van Heurck. 



— divergens, Ralfi 



— Brebissonii, Kutz. 



— Johnsonii, W. Sm. 



— mesolepta, Ehren. 



— Rabenhorstii, GrUn. 



— crucicula. Van Heurck. 

 V'anheurckia rhomboides, Breb. 

 Stauroneis Phoenicenteron, Eh- 

 ren. 



— anceps, Ehren. 



var. linearis. Van Heurck. 

 Pleurosigma acuminatum, W.Sm. 



— tttenuatum, W. Sm. 



— Spencerii, V/. Sm. 



DlATOMACEAE {cOJIt.) 



Gomphonema augur, Ehren. 



— constrictum, Ehren. 



— acuminatum, Ehren. 



— olivaceum, Ehren. 

 Rhoicosphenia curvata, GrQn. 

 Encyonema prostratum, Ralfs 



— caespitosum, Kutz. 

 Cymbella affinis, Kotz. 



— cuspidatum, Kutz. 



— Ehrenbergii, Kutz. 

 Cocconema lanceolatum, Ehren. 



— cymbiforme, Ehren. 



— Cistula, Ehren. 

 Amphora salina, W. Sm. 

 - — hyalina, Kutz. 



— ovalis, Kotz. 



var. affinis, KUtz. 

 var. pediculus, Kutz. 

 Epithemia turgida, W. Sm. 



— sorex, Kutz. 



— zebra, Kutz. 



— gibba, Kutz. 



— ventricosa, KUtz. 

 Bacillaria paradoxa, Gmel. 

 Nitzschia sigmoidea, W. Sm. 



— linearis, W. Sm. 



— sigma, W. Sm. 



— spectabilis, Ralfs 



— Amphioxys, W. Sm. 



— vivax, W. Sm. 



— bilobata, W. Sm. 



— plana, W. Sm. 



— acicularis, W. Sm. 



— gracilis, Raben. 



— lanceolata, W. Su.. 



— constricta, Pritch. 

 Cymatopleura Solea, W. Sm. 



var. apiculata, Pritch. 



— elliptica, W. Sm. 

 Surirella biseriata, Breb. 



— linearis, W. Sm. 



— gracilis, GrUn. 



— striatula, Turp. 



— Brightwellii, W. Sm. 



— minuta, Breb. 



— ovata, Kutz. 



var. salina, W. Sm. 

 Campylodiscus noricus, var. 

 costata, W. Sm. 



— Echineis, Ehren. 



The following are marine 

 diatoms : — 



Podosira hormoides, KUtz. 



— maculata, Sm. 

 Melosira nummuloides, Ag. 



— sulcata, Kutz. 

 Hyalodiscus stelliger. Bail. 

 Coscinodiscus excentricus, Ehren. 



DlATOMACEAE (cOHt.) 



Coscinodiscus radiatus, Ehren 

 var. concinnus, W. Sm. 

 Actinoptychus undulatus, Ehren. 

 Auliscus sculptus, Ralft 

 Eupodiscus Argus, Ehr. 

 Actinocyduscrassus.Van Heurck. 

 Biddulphia aurita, Breb. 



— pulchella. Gray 



— rhombus, W. Sm. 



— Smithii, Van Heurck. 



— Favus, Van Heurck. 

 Synedra affinis, Kutz. 



— fulgens, W. Sm. 



— superba, Kutz. 

 Achnanthes longipes, Ag. 



— brevipes, Ag. 

 Schizonema eiimium, Thur. 



— crucigerum, W. Sm. 



— GreviUii, Ag. 

 Cocconeis scutellum, Ehr. 



— diaphana, W. Sm. 

 Navicula Smithii, Ag. 



— didyma, Ehren. 



— marina, Ralfs 



— Hennedyi, var. clavata. 



Van Heurck. 



— Lyra, Ehren. 



— directa, W. Sm. 



— aspera, Ehren. 

 Scoliopleura Westii, GrUn. 



— latestriata, GrUn. 



— tumida, Rabenh. 

 Stauroneis salina, W. Sm. 

 Pleurosigma formosum, W. Sm. 



— decorum, W. Sm. 



— speciosum, W. Sm. 



— rigidum, W. Sm. 



— elongatum, W. Sm. 



— strigosum, W. Sm. 



— quadratum, W. Sm. 



— angulatum, W. Sm. 



— Aestuarii, W. Sm. 



— Balticum, W. Sm. 



— Fasciola, W. Sm. 



- — intermedium, W. Sm. 



— acuminatum, VV. Sm. 



— praelongum, W. Sm. 



— tenuissimum, W. Sm. 



— littorale, W. Sm. 



— Hippocampus, W. Sm. 

 Doryphora amphiceros, Kutz. 

 Amphiprora alata, Kutz. 



— constricta, Ehren. 

 ^r vitrea, W. Sm. 



— elegans, W. Sm. 

 Mastogloia Smithii, Thw. 

 Rhoicosphenia curvata, var. 



marina, W. Sm. 



Epithemia musculus, var. con- 

 stricta, W. Sm. 



Tryblionella acuminata, W. Sm. 



76 



