NO. 4 FORAMINIFERA CUSHMAN 3I 



Genus CONULITES 



Test conical, usually higher than broad, base flattened or convex, 

 early chambers spiral, outer chamberlets rectangular ; walls straight ; 

 internal chamberlets usually in curved layers ; apertures in the basal 

 wall. 



Subfamily 6. ENDOTHYRINAE 



Test arenaceous with calcareous cement wall distinctly perforate. 



Genus NODOSINELLA Brady, 1876 



Test Nodosariform, finely arenaceous, nearly smooth externally ; 

 interior sometimes slightly labyrinthic ; aperture simple. 



Genus STACHEIA Brady, 1876 



Test adherent, composed either of numerous segments subdivided 

 into chamberlets, or of an acervuline mass of chamberlets either 

 arranged in layers or confused. 



Genus ENDOTHYRA Phillips, 1846 



Test polythalamous ; nautiloid or Rotaliform ; aperture simple, 

 situated at the inner margin of the final chamber. 



Genus BRADYINA Moller, 1878 



Test nautiloid ; aperture consisting of a number of pores on the 

 face of the terminal chamber; with pores (?) also in the septal 

 depressions. 



Genus INVOLUTINA Terquem, 1862 



Test lenticular, consisting of a planospiral tube with a deposit of 

 shell-substance on both faces, thickest near the middle ; tube some- 

 times slightly constricted at intervals ; shell-wall more or less 

 perforate. 



Family 4. TEXTULARIIDAE 



Test either arenaceous or calcareous, perforate, the chambers 

 usually numerous, typically biserial or triserial, or in some genera 

 spirally arranged. 



Subfamily i. SPIROPLECTINAE 



Test either coarsely arenaceous or calcareous, or even hyaline, the 

 early chambers following the proloculum closely coiled, the later 

 3 



