90 Transactions of the Royal Microscopical Society. 



Saccammina, Sars. Monotlialamous in one form. 



a. Psammosphsera, P. E. Schiilze. Monothalaraoiis ? 



b. Storthosphsera, F. E. Schiilze. Monothalamous. 

 Pilulina, Carpenter.* Monothalamous. 

 Astrorhiza, Sandahl. Monothalamf)Us. 



a. Astrodiscus, F. E. Schulze. INIonothalamous. 

 Ehabdammina, Carpenter. Monothalamous? 

 Botellina, Carpenter. Monothalamous. 

 Proteonina, Williamson. Monothalamous? 

 Lituola, Lamarck. Often dimorplious. 



a. Placopsilina, D'Oib. Fixed. 



6. Haplophragmium, Ruuss. Often dimorphous. 



c. Haplosticbe, Reuss. 



d. Hijipocrepina, Parker. 



e. Polyphragma, Reuss. 

 /. Conulina (?), D'Orb. 



III. FORAMINIFERA PERFORATA VEL HYALINA. 



I. Lagenida. 



Ellipsoidina, Seguenza. 



Lageiia, Walker and Jacob. Monothalamous. 



a. Entosoleuia, Ehrenberg. 



h. Fissurina, Reuss. 

 Eamulinu, Jones. Slightly segmented, brancliing. 

 Nodosarina, Parker and Jones. 



a. Glandulina, D'Orb. 



6. Nodosaiia, Lamarck. 



c. Dentalina, D'Orb. 



d. Lingulina, D'Orb. 



e. Tingulinopsis, Reuss. Dimorphous. 

 /. Rimulina, D'Orb. 



g. Vaginulina, D'Orb. Dimorphous usually. 

 h. Marginulina, D'Orb. Dimorphous. 

 i. Psecadium, Reuss. Dimorjjhous. 

 j. Cristellaria, Lamk. Sometimes dimorplious. 

 k. Planulnria, Defr 

 /. Flabellina, D'Orb. Dimorphous. 

 m. Frondicularia, Defrance. 

 w. Amphimorphina, Neugeb. Dimorphous. 

 Ortliocerina, D'Orb. 

 a. Dentalinopsis, Reuss. Dimorphous. 



II. Polymorph iNiDA.t 



Polymorphina, D'Orb. 



n. Dimurpliina, D'Orb. (restricted). Dimorphous. 

 Uvigerina, D'Orb. 



a. Sagrina, D'Orb. (restricted). Dimorphous. 



III. BULIMINIUA. 



Bulimina, D'Orb. 



a. Ataxophragmium (sandy), Reuss. 

 6. Bolivina, D'Orb. 



* For this and some other allied forms, see Dr. Carpenter's 'Descriptive 

 Catalogue of Objects from Deep-sea Dredgiiigs exhibited at the Soiree of the 

 Royal Microscopical Society, King's College, April 20th, 1870.' 8vo. London, 

 1870. 



t The ruli/mor/ihinklii are separated from the Larjcuida only on account of (heir 

 altcrn dc arrangMnent of chandlers. 



