NO. 4 FORAMINIFERA CUSHMAN 23 



Genus HYPERAMMINA H. B. Brady, 1878 



Plate 2, fig. 5 



Test free, elongate, in general a simple cylindrical tube, straight 

 or slightly curved with a swollen proloculum at the proximal end, 

 distal end open and serving as the aperture ; wall composed of sand 

 grains, interior usually smoothly finished, exterior often rough, in 

 some species the exterior smoothly finished and the cement in greater 

 excess. 



Genus PSAMMATODENDRON Norman, 1881 



Test attached by the bulbous proloculum, remainder of test free 

 and erect, dichotomously branching, tubular, of even diameter 

 throughout ; wall arenaceous with ferruginous cement ; open ends of 

 the tubes serving as apertures. 



Genus SACCORHIZA Eimer and Fickert, 1899 



Plate 2, fig. 6 



Test free, consisting of an ovoid proloculum with a branching 

 tubular second chamber ; wall composed of sand grains usually with 

 the exterior roughened by projecting sponge spicules incorporated in 

 the wall ; apertures formed by the open ends of the tubular chamber. 



Genus SYRINGAMMINA H. B. Brady, 1883 



Test free or adherent, consisting of a bulbous base and many 

 branching arms, or of masses of anastomosing tubes in a roimded 

 mass ; wall of fine arenaceous particles with a small amount of in- 

 organic cement : apertures at the extremities of the tubular portions. 



Genus JACULELLA H. B. Brady, 1879 



Plate 2, fig. 7 



Test free, elongate, conical, widest at the apertural end, opposite 

 end typically closed ; wall comparatively thick, composed of sand 

 grains firmly cemented, rough on the exterior ; aperture formed by 

 the open end of the tube, circular, 



Genus DENDROPHRYA Str. Wright, 1861 



Plate 2, fig. 8 



Test attached, consisting of a single chamber, erect or with spread- 

 ing arms, tubular, irregular or branching; wall arenaceous, with a 

 chitinous base : apertures at the ends of the arms. But a few species 



