PLATE 17 



Hystrichokolpoma eisenacki sp. nov. 

 Fig. 1. Specimen showing the long antapical process, the slender equatorial processes and 

 the deep sulcal notch. V. 51753(2). x66o. 

 Fig. 2. Holotype, V. 51958(1). X 660. 



Fig. 3. Specimen with apical plates in position. V. 51752(4). x 400. 

 Hystrichokoplorna rigaudae Deflandre & Cookson 

 Fig. 4. Precingular, equatorial, and postcingular and antapical processes are clearly visible. 

 V. 51757(2). X400. 



Hystrichokolpoma eisenacki var. turgidum nov. 

 Fig. 5. Holotype. ^".51959(1). x 400. 



Hystrichokolpoma unispinum sp. nov. 

 Fig. 6. Specimen with all processes buccinate. V. 51960(1). x66o. 



Fig. 7. Holotype. Apical view, sulcus marked by belt of small pores at top left. ¥.51961(1). 

 X660. 



