CONTENTS. 
IX 
Systematic descriptions — Continued . 
Order Cheilostomata Busk — Continued. 
Suborder Ascophora Levinsen, 1909 — Continued. 
Family Escharellidae Levinsen, l'909 — Continued. 
Group I. Schizoporellae Canu and Bassler, 1917 — Continued. Page, 
Genus Scbizolavella,~new genus 358 
Stylopoma Levinsen, 1909 359 
Dakaria Jullien, 1903 359 
Metroperiella Canu and Bassler, 1917 361 
Emballotheca Levinsen, 1909 366 
Tetraplaria Tenison-Woods, 1878 367 
Gemellipora Smitt, 1872 369 
Gemelliporella, new genus 372® 
Nimba Jullien, 1903 372 
Characodoma Maplestone, 1900 372 
Group II. Hippoporae Canu and Bassler, 1917. (Lepraliidae Jullien, 1903). 372 
Genus Hippoporina Neviani, 1895 374 
Hippoporella, new genus 377 
Hippoponella, new genus 379 
Hippomenella Canu and Bassler, 1917 379 
Hippodiplosia Canu, 1916 393 
Hippozeugosella Canu and Bassler, 1917 398 
Hippadenella Canu and Bassler, 1917 402 
Group III. Peristomellae Canu and Bassler, 1917 402 
Genus Bathosella Canu and Bassler, 1917 404 
Romaneheina Jullien, 1888 406 
Peristomella Levinsen, 1902 408 
Exochella Jullien, 1888 415 
Didymosella Canu and Bassler, 1917 416 
Trypematella, new genus 417 
Group IV. Microporellae 417 
Group V. Divers genera 420 
Genus Houzeauina Pergens, 1889 421 
Cyclieopora Hincks, 1884 424 
Kymella Canu and Bassler, 1917 428 
Aimulosia Jullien, 1888 428 
Anarthropora Smitt, 1867 430 
Oyclocolposa, new genus 431 
Cycloperiella, new genus 431 
Family Stomachetosellidae Canu and Bassler, 1917 431 
Genus Stomachetosella Canu and Bassler, 1917 432 
Enoplostomella Canu and Bassler, 1917 434 
Schizemiella Canu and Bassler, 1917 439 
Metradolium Canu and Bassler, 1917 440 
Leiosella Canu and Bassler, 1917 448 
Metrocrypta Canu and Bassler, 1917 450 
Ochetosella Canu and Bassler, 1917. > 451 
Family Smittinidae Levinsen, 1909 453 
Genus Smittina Norman, 1903 456 
Plagiosmittia Canu and Bassler, 1917 471 
Mucronella Hincks, 1880 474 
Rhamphostomella Lorenz, 1886 476 
