DESCRIPTIVE CATALOGUE OF RECENT FORAMINIFERA. 265 



Walls tliiok, composed of loose sand or mud, very sliglitly cemented. 



Genus ASTRORHIZA. 



Test fusiform or de]>ressed. Depressed forms citlior siihlenticular 

 with angular or irregularly radiate margin, or in branching masses. 

 Apertnies at the end of each ray or braiicli. 



ASTRORHIZA GRANULOSA Brady. 

 (Plat.' L) 



Test fusiform, composed of fine gray sand ratlicr loosely cemented 5 

 cavity a tube of nearly uniform diameter, open at both ends; extremities 

 of the test often tinged brown. Section shows thickness of shell aud 

 dimensions of cavity. Length, 4.5 mm. (j% inch), more or less. 



Xoro/ (7^.— North Atlantic (stations L>r)68, 2r)70, 272.3), l,ns."5 to 1.781 

 fathoms. 



ASTRORHIZA CRASSATINA Brady. 

 (Plate 2.) 



Test elongate, irregularly cylindrical. Differs from A. {iranulnsa in 

 that the cavity is more or less constricted at uncertain intervals. 

 Length, 6 mm. {\^ inch) or more. 



Localities. — North Atlantic off (ieorges Bank, off" Long Island, and 

 off Chesapeake Bay (stations 2570, 2580, 2723), 328 to 1,813 fathoms. 



ASTRORHIZA ANGULOSA Brady. 

 (Plates, fig. 1.) 



Test irregularly triangular, depressed, thick, fragile, composed of fine 

 gray sand loosely coherent; cavity a central globular chamber with 

 tubes radiating to the angles and terminating in simple apertures. 

 Section to show the cavity. 



Locaiitji. — Marthas Vineyard (station 25()9), 1,782 fjithoms. 



ASTRORHIZA ARENARIA Norman. 



(Plate:!, li,;;-. 2.) 



Test compressed, radiate or branched, composed of line gray sand 

 loosel}' cemented; very fragile; cavity corresponds with the form of 

 the test; aperture at the end of each ray or branch. 



Localifie.s. — Off Marthas Vineyard and (ieorges Bank (stations 2547, 

 2570, 2586), 328 to 1,813 fathoms. 



'* Genus PELOSINA. 



Test free, typically monothalamous; rounded, cylindrical, tapering 

 or irregularlj' fusiform ; walls composed of mud with a chitinous lining; 

 aperture single, terminal. 



