Taxonomic notes on Recent Foraminifera from the Continental Shelf-Slope Region of Southwestern Bay of Bengal, East Coast of India Author Symphonia, Tabita K. Author Senthil, Nathan D. text Palaeontologia Electronica 2019 55 A 2019-09-30 22 3 1 89 http://dx.doi.org/10.26879/811 journal article 10.26879/811 1094-8074 10961656 Spirosigmoilina tenuis (Cžjžek, 1848) Figure 21.3-4 1848 Quinqueloculina tenuis Cžjžek , p. 149, pl. 13, figs. 31-34. 2014 Sigmoilinita tenuis (Cžjžek) ; Panchang and Nigam, pl. 14, fig. 3a-c. Description. Test elongate, compressed, wall calcareous, translucent, surface smooth; chambers sigmoidal initially, later arranged in quinqueloculine plan, periphery broadly rounded, sutures very distinct and depressed; aperture terminal, small, circular at the end of a short neck.