86 FORAMINIFERA 



Genus JACULELLA H. B. Brady, 1879 



Plate 6, fibres 4, 5 

 Genoholotype, Jaculella acuta H. B. Brady 

 Jaculella H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 1879, p. 35. 



Test free, elongate conical, widest at the apertural end, oppo- 

 site end closed ; wall of firmly cemented sand grains, thick, rough 

 on the exterior, smoothly finished within, with a thin chitinous 

 layer ; aperture circular, formed by the open end of the tube. 



Tertiary and Recent. Typically in cold or deep water. 



The distinction between proloculum and second chamber is 

 often not well marked except in the megalospheric form. 



Genus HIPPOCREPINA Parker, 1870 



Plate 6, figures 6-8 

 Genoholotype, Hippocrepina ivdivisa Parker 

 Hippocrepina Parker, in Dawson, Canad. Nat., n. ser., vol. 5, 1870, p. 176. 



Test free, elongate, tapering, the apertural end broad but some- 

 what contracted about the aperture, distinction between 

 proloculum and second chamber often indistinct; wall thin, of 

 fine sand grains with a yellowish-brown cement, often with fine 

 mica flakes giving a luster to the surface; aperture curved, 

 narrow or irregular, sometimes with a slightly raised lip. 



Pliocene to Recent. Characteristic of very cold waters of the 

 northern hemisphere, usually at shallow depths. 



Subfamily 2. Dendrophryinae 

 Test attached, usually branching 



Genus SACCORHIZA Eimer and Fickert, 1899 



Plate 6, figures 9-11 



Genoholotype, Hyperammina ramosa H. B. Brady 



Saccorhiza Eimer and Fickert, Zeitschr. Wlss. Zool., vol. 65, 1899, p. 670. 

 Hyperammina (part) H. B. Brady, Quart. Journ. Micr. Sci., vol. 19, 

 1879, p. 33. 



Test free, consisting of an ovoid proloculum and a branching, 

 tubular second chamber; wall with a thin inner chitinous layer, 

 and a thicker outer layer of sand grains often roughened by 



