NO. 4 FORAMINIFERA CUSHMAN 21 



Genus PILULINA W. B. Carpenter, 1870 



Test free, globular or ovate, consisting of a single undivided 

 chamber ; wall composed of felted sponge spicules and a slight amount 

 of fine sand without cement, aperture elongate, with a somewhat 

 depressed area about it. 



Genus PELOSINA H. B. Brady, 1879 

 Plate I, fig. II 



Test free, variously formed, rounded, cylindrical or irregularly 

 elongate ; wall usually thick, composed of mud with various foreign 

 bodies included in the outer portions ; interior with a thin, mem- 

 branaceous, chitinous layer often extending out and forming the whole 

 wall at the apertural end of some species ; aperture typically single 

 and terminal, occasionally multiple in P. variabilis. 



Genus HIPPOCREPINA Parker, 1870 

 Plate I, fig. 12 



Test free, consisting of a single, elongate, somewhat tapering, 

 straight or slightly curved chamber, closed at the somewhat bluntly 

 pointed proximal end, distal end broad and rounded ; walls compara- 

 tively thin, of fine sand grains with a reddish-brown cement, grayish 

 toward the distal end ; aperture curved, narrow, or irregular, some- 

 times with a raised lip. 



Genus TECHNITELLA Norman, 1878 

 Plate 2, fig. I 



Test free, usually elongate, subcylindrical, fusiform or elongate 

 oval, consisting of a single chamber ; "wall thin, composed of sponge 

 spicules and fine sand, aperture rounded at the open end of the test. 



Genus WEBBINELLA Rhumbler, 1903 

 Plate 2, fig. 2 



Test fixed, circular in outline, the central portion convex, the 

 peripheral portion often forming a flattened flange-like rim about the 

 central portion ; chamber single, undivided ; wall of medium thickness, 

 composed of fine sand grains with a large proportion of cement rather 

 smoothly finished both without and within ; aperture not apparent, the 

 pseudopodia being thrust out at the basal portion of the test near 

 the surface of attachment. 



