CONTENTS. 



XV11. 



Genus 128. 

 Genus 129. 

 Genus 130. 

 Genus 131. 



Genus 132. 



Genus 133. 



Genus 134. 

 Genus 135. 

 Genus 136. 

 Genus 137. 

 Genus 138. 

 Genus 139. 

 Genus 140. 



Genus 141. 



Genus 142. 

 Genus 143. 

 Genus 144. 

 Genus 145. 

 Genus 146. 

 Genus 147. 

 Genus 148. 

 Genus 149. 



Genus 150. 

 Genus 151. 



Climocodiu.m Grun., 1868. 

 Streptotheca Cleve, 1S90 

 Bellerochea H.V.H., 1885 



LlTHODESMIUM EHR., 1 S40 . 



I V. Eiibiddulphicce. 

 Biddulphia Gray, 1831 . 



Odontella Ag. , 1832 valves smooth or finely punctate or granular, 



with undulating margins. 

 Zygoceros Ehr. , 1840 frustules free, with processes in the form of 



horns. 

 Denticella Ehr., 1839 valves furnished with hairs or awl-shaped 



spines placed on a central lobe. 

 Cerataulus Ehr., 1843 processes alternating with spines in the form 



of horns. 

 Triceratium Ehr., 1839 valves triangular. 

 Amphitetras Ehr., 1840 valves quadrangular. 

 Amphipentas Ehr., 1840 valve pentagonal. 

 Polyceratiuni Castr., 1886 valves polygonal. 

 Cerataulina H. Per., 1892 sutural zone large and annulate. 

 Capsula Brun., 1895 having an interval valve, with a triangular 



space. 



Entogonia Grew, 1863 . . . . 



Heibergia Grev. , 1865= triangular form cf Entogonia Davy an a 

 Grev. according to Bergon. 



Porpeia (Bailey) Ralfs, 1861 

 Tabulina Brun., 1889 

 Odontotroits Grun., 1884 

 Keratophora Pant., 1889 

 Kittonia Grove & Sturt, 1S87 

 Huttonia Grove & Sturt, 1887 

 Grovea Ad. Schmidt, 1890 



Tribe XXII. Eupodisce^: 

 Auliscus (Ehr., 1843), Bailey Em., 1854 



Mastodiscus Bail., 1854. 



Pseudo-Auliscus Leud.-Fort., 1879 

 Pseudo-Ckrataulus Pant., 1889 

 Monopsis Grove & Sturt, 1SS7 

 Glyphodiscus Grev, 1862 

 Fenestrella Grev., 1863 . 

 Bergonia Tempere, 1S91 . 

 Eupodiscus Ehr, 1S44 ' . 

 Aulacodiscus Ehr., 1845 



Tchestnovia Pant., 1889 



Craspedoporus Grev.., 1863 

 Roperia Grun., 1885, in H.V.H. Atl 



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