344 



List of Diatomacej! Observed in Gtathering prom the River 



Lea. 



By E. Grove, F.R.M.S. 



{Taken as read January 19th, 1894.) 



Aclmanthes injlata (Ktz.), Grun.; scarce. - 



,, minutissima (Ktz.), Grun. ; scarce. 



Amphora oviiUs, Ktz. 



„ ,, var. affinis, Ktz. 



„ ,, var. Pediculiis, Ktz. 



CampylocUscus hibernicus, Elir. (C costatus, Sin.). 

 Cocconeis Pediculus, Elir. 



„ Placentula, Ehr. 

 Cyclotella antiqua, Sm. ; scarce. 



„ operculata, Ktz, ; scarce. 

 Cyniatopleura apicnlata, Sm. (doubtfully distinct from C. Solea). 

 „ elliptica, Sm. 



„ parallela, Sm. 



„ Solea, Sm. 



Cymhella anglica, Lag. 



„ cequalis, Sm. ; scarce. 



„ Cistiila, Hemp. 



„ „ var. maculata, Ktz. 



„ Khrenbergii, Ktz. ; scarce. 



., gastroides, Ktz. {G. aspera, Ehr.) 



,, helvetica, Ktz. 



,, lanceolata, Ehr. 



,, obtusa, Greg. 



„ {Encyonema) coespitoswn, Ktz. 



jj „ ^jrosfraa^m, Ralfs. 



„ „ turgidum, Greg. 



Diatuma mdgare, Bory. 



