1896.] MICROSCOPICAL JOURNAL. 165 



Diatoms Found in a Fresh-water Deposit from Jones- 

 port, Maine. 



By a. B. AUBERT, 

 oeono, maine. 



The deposit is of a light brown color consisting of fine 

 sand, silt and diatoms. It is entirely modern, being in 

 process of formation at present and greatly resembles 

 the deposits so abundant in New England. 



The list given below is by no means a complete one and 

 only comprises those forms which are fairly abundant. 

 I owe this specimen to the kindness of Mr. L. H. Merrill, 

 of the Maine Experiment Station. 



RAPHIDIE^. 



A.mpliora ovalis, Kutz. 



" affinis, W. Sm. 



Cymbella gasteroides, Kutz, 



" ehrenbergii, Kutz. 



*' cuspidata, Kutz. 



" af&nis, Kutz. 



" gracilis, Kutz. 



" cistula, Hemp. 



" heteropleura, Kutz. 

 Encyonema caespitosum, Kutz. 

 Stauroneis phoenicenteron, Etir. 



" " var Baileyii. 



acuta, W. Sm. 



" acuta, a very elongated variety. 



" anceps, Elir. 



" punctata, Kutz. 

 Navicula brebissonii, Kutz. 

 lata, Ehr. 



" nobilis, Kutz, type and vars. 



" major, Kutz. 



" viridis, Kutz. 



" divergens, W. Sm. 



" semen, Ehr. 



" amphigomphus, Ehr. 



" elliptica, Kutz. 



" iridis, var, Ebr. 



" tenella, Breb. 



" affinis, Ehr. 



