75 



Eucampia Virginicay Grun. Rare. 

 Eunotia monodo7i, Ehrb. Two varieties. 

 E, robusta (Ehrb.), Ralfs. Several varieties. 

 Eupodiscus Rogersii, Ehrb. Specimens are found with 3, 4 or 

 5 processes, but those with three are most frequent. 



Eiipodisctis sp. .^ 



Goniotheciiim odontella^ Ehrb. 



G. Rogers it, Ehrb. 



Gramniatophora serpentina, Ehrb., var. Rare. 



Hyalodisciis stelliger, Bailey. ( Podosira maculata, VV. Sm.) 



Hydroscra triqnetra, Wallich. 



Mastogonia actinoptychnSy Ehrb. 



Melosira sulcata (Ehrb ), Kutz. 



Navictila crabrOy Ehrb. 



A^. dzdymUy Ehrb. 



N. ellipticay Kutz. 



N. entomony Ehrb. 



N. forcipatay Grev. 



A^. gracilis (Ehrb.), Kutz. 



A^. Hennedyiy W. Sm. 



N. majory Kutz. Rare. 



N. permagnay Bailey. 



N. prcBtextay Ehrb. 



NaVICULA SchuLTZEI, Kain, n. sp. 



Valve broadly elliptical; intermediate free space expanded 

 around the central nodule; striae coarsely moniliform, convergent 

 opposite the central nodule and radiate towards the apices. 

 (Plate LXXXIX. Fig. 2). 



N, viridisy Kutz. Rare. 

 Plenrosio;ma VirHniactimy Peticolas. 



Pleiirosigma sp. ? Fragments of a very large Pleiirosigma, allied 



to P. angulalitm are occasionally found. 

 Pseiid-atilisais radiatiis, Bailey. 

 Pyxidicitla cruciata, Ehrb. 



Rhabdonema AtlanTICUM, Kain and Schultze, n. sp. 

 Valve narrow, linear elliptic ; frustule with two median and 

 two marginal septae, the former more curved and conspicuous 



