48 



T.G. PILLAI AND HA. TEN HOVE 



d.s. 



Fig. 3 Diagrammatic representations of ITS in the various species. A, Generalized drawing with all the main ITS. The orientation of the 

 tube and terminology used are the same for all the diagrams. Ant., anterior direction, d, dorsal side, d.cx.w., dorsal convex wall.d.l.r., 

 dorso-lateral ridge, d.r., dorsal ridge, v, ventral side.v.cv.w., ventral concave wall, v.r., ventral ridge. B, S. singularis sp.nov. C, 5. 

 deltoides sp. nov.; d.s., deltoid serrations. D, S. massiliensis (Zibrowius, 1968). E, S. capeverdensis sp. nov.; k.c.d., knob-like calcareous 

 deposits. F, 5. nudicrista sp. nov. & 5. snellii sp.nov.; v. v.r., variant form of ventral ridge. G, S. ypsilon sp. nov. & S. paraypsilon sp. nov. 

 H, S. sumbensis sp. nov. I, S. iugoconvexa sp. nov. J, S. vasseuri sp. nov. K, S. plaiae sp. nov. L, S. caribensis sp. nov. & 5. lineatuba 

 (Straughan, 1967). M, S. discifera sp.nov.; t.d., transparent discs. N, S. karpatensis sp. nov. & S. minuta (Straughan, 1967). O, S. zibrowii 

 sp. nov. 



