DESCRIPTIVE CATALOGUE OF RECENT FORAMINIFERA. 259 



Family II. ASTRORHIZID I ■.. 



Walls thick, composed of sand or mud, slightly cemented .. Subfamily Astrorhizin i . 

 Fusiform, branching, or Battened with angular or radiate margin ; aperture at 



the end of each ray or branch Genus Astrorhiza. 



More or less flask shaped or subcylindrical; aperture single, terminal : 



Genus Pelosina. 

 Subgiobular, very irregular externally; apertures numerous, in horn-like pro- 

 tuberances Genus Storthosphcera. 



Columnar, branching, or irregularly outspread; adherent; apertures terminal: 



Genus Ik ndrophrya. 

 A rounded mass of radiating, branching tubes arranged in more or less distinct 



layers Genus Syringammina. 



Walls thick, composed of felted sponge spicules and fine sand, uncemented : 



Subfamily I'ilulininve. 



Spherical ; aperture a long, curved slit Genus Pilulina. 



Subspherical, labyriuthic or cavernous, or having a central undivided cavity with 



subcavernous walls ; no general aperture Genus Crithionina. 



Oval or subcylindrical ; aperture typically a rounded orifice at one end: 



Genus Technitella. 



Cylindrical, long, slightly tapering, open at both ends Genus Bathysiphon. 



Walls thin, composed of sand grains firmly cemented; test nearly spherical: 



Subfamily Sacx'amminix.e. 



A single globular chamber, without general aperture Genus Psammosphwra. 



A number of adherent globular chambers, without general aperture: 



Genus Sorospha ra. 

 One or several globular, pyriform or fusiform chambers, with or without tubular 



connection ; apertures distinct Genus Saccammina. 



Walls composed of firmly cemented sand grains, often mixed with sponge spicules; 

 test tubular, sometimes imperfectly segmented. .Subfamily Riiaudamminin.k. 



Elongate, tapering, simple; aperture at the broad end Genus Jaculella. 



Elongate, cylindrical, simple or branched; aperture at on© end, the other end 



rounded, sometimes inflated Genus Hyperammina. 



Fusiform or cylindrical, largely composed of sponge spicules; aperture at each 



end Gen us Marsipella. 



Rectilinear, radiate or branching, with or without a central chamber; apertures 



at the open ends of the tubes Genus Bhabdammina. 



Very variable, usually consisting of irregular inflated sacs, single or united; 



apertures multiple, tubulated Genus Asohemonella. 



Tubular, slender, flexible, simple or branched, chitino-arenaceous, in nonadher- 

 ent masses Genus lihizammina. 



Tubular, branching, reticulated, adherent to the surface of shells or stones; 



apertures terminal Genus Sagenella. 



Subcylindrical, adherent at one end, rounded at the other, constructed of loose 



sand grains; imperfectly septate Genus Botellina. 



Columnar, straight or crooked, adherent by an expanded base, enlarging or 

 branching toward the apex; aperture terminal Genus Haliphysema. 



Family III. Lituolid k. 



Test composed of coarse sand grains, rough externally Subfamily Lrnoi.ix.E. 



Not labyrinthic. 

 Test free. 



Chambers one, or several united in a straight, curved, or irregular line, 



never spiral Genus Beophax. 



Chambers numerous, partly or entirely spiral. ..Genus Haplophragmium. 



