444 PROCEEDINGS OF THE ACADEMY OF [1890. 



GEOLOGY OF ARTESIAN WELLS, ATLANTIC CITY, N. J. 

 BY LEWIS WOOLMAN. 



Additional Species of Diatomacece. — In the list of species identi- 

 fied by C. Henry Kain and E. A. Schultze, (pages 136 to 140 of this 

 volume) there was accidentally omitted the entire enumeration of 

 of species of the genus Navicula. The list is as follows : 



Navicula crabro Ehr. 



Navicula didyma Ehr. 



Navicula DeWittiana Kain & Schultze. 



Navicula elliptica Kutz. 



Navicula entomon Ehr. 



Navicula forcipata Grev. 



Navicula gracilis (Ehr.) Kutz. 



Navicula Hennedyi W. Sow. 



Navicula Lewisiana Grev. 



Navicula Lyra Ehr. 



Navicula macilenta Ehr. Rare. 



Navicula (pinnularia) major Kutz. Rare. 



Navicula permagna Bail. 



Navicula praetexta Ehr. 



Navicula Smithii Breb. 



Navicula viridis Kutz. Rare. 



