CONTENTS. 



Mil. 



Genus 

 Genus 



66. 

 67. 



Tribe IX. Raphoneide/e 



a. Symmetrical. 

 Clavicula Pant., 18S6 

 Terebraria Grev., 1864 

 Raphoneis Ehr., 1844 



Doryphora Ktz., 1844 frustules stipitate. 



b. Asymmetrical (Tracliyspheniacece P. Pttit). 

 Trachysphenia Paul Petit, 1877 

 sckptroneis ehr, 1 844 

 Grunoviella H. Van Heurck, 1892 . 

 Peronia Breb. & Arn., 1868 

 Opephora Paul Petit, i 888 



Tribe X. Plagiogramme^:. 

 Glyphodesmis Grev., 1862 . 

 Omphalopsis Grev., 1863 . 



DlMEREGRAMMA RALFS., i860, CHAR. Em. 



Tubularia Brun., 1894 

 Plagiogramma Grev., 1859. 



Cohort II Tabeltariinece 

 Tribe XI. Entopyle^e 

 Eutopyla Ehr., 1841 



Eupleuria Arnott, 1858 (synonymous). 



Gephyria W. Arnott, i860 



Tribe XII. Licmopherea: 

 Licmophora Ac, 1827, Char. Em. 



Rhipidophora Ktz.. 1844 frustules stipitate, girdle face obovate 

 lanceolate. 



Climacosphenia Ehr., 1843 



Tribe XIII. Meridione^e 

 Meridion Ag., 1824 



Tribe XIV. Diatome^e 

 Diatoma De Candolle, 1805, Char. Em. 



Odontidium Ktz., 1844 frustules united in short bands, costse very 



robust. 

 Ralfsia O'Meara, 1875 valves hyaline, without costje = Fragilaria. 



Denticula Ktz., 1844, Char. Em. 



Tribe XV. Tabellarie^e 

 A. Only two jalse septa. 



DlATOMELLA GREV., 1 855 . . . . 



Grammatophora Ehr., 1839 



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