CONTENTS. 
XIII 
Systematic descriptions of the Cyclostomata — Continued. 
II. Division Ovicellata — Continued. 
Subdivision Parallelata Waters — Continued. rage. 
Family Terviidae, new 788 
Genus Tervia Jullien, 1882 788 
Lagonoecia, new genua > 792 
Prosthenoecia Canu, 1918 793 
Family Horneridae Gregory, 1899 . 793 
Genus Hornera Lamouroux, 1821 796 
Crassohornera Waters, 1887 802 
Siphodictyum Lonsdale, 1849 802 
Phormopora Marsson, 1887 803 
Family Frondiporidae Busk, 1875 803 
Genus Frondipora Imperato, 1599 803 
Telopora, new genus 807 
Forma Fasciculipora D’Orbigny, 1846. 807 
Discofascigera D’Orbigny, 1852 808 
Apsendesia Lamouroux, 1821 809 
Subdivision Rectangulata Waters, 1887 809 
Family Lichenoporidae Smitt, 1866 812 
Genus Lichenopora Defrance, 1823 812 
Orosopora, new genus 822 
Trochiliopora Gregory, 1909 822 
Conocava Calvet, 1911 823 
Family Leiosoeciidae, new, 1919 823 
Genus Leiosoecia, new genus 823 
Parleiosoecia, new genus 824 
Family Tretocycloeciidae Canu, 1919 826 
Genus Tretocycloecia Canu, 1919 826 
Partretocycloecia Canu, 1919 830 
Family Ascosoeciidae Canu, 1919 834 
Genus Ascosoecia Canu, 1919 836 
Polyascosoecia, new genus 837 
Parascosoecia Canu, 1919 840 
Order Ctenostomata Busk 841 
Family Terebriporidae D’Orbigny, 1839 842 
Genus Terebripora D’Orbigny, 1839 842 
843 
* 
Index 
