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 Sigmoilopsis schlumbergeri (Silvestri, 1904) Figure 21.2 1904 Sigmoilina schlumbergeri Silvestri , p. 267, pl. 7, figs. 12-14; p. 481, text-fig. 6; p. 482, text-fig. 7. 2010 Sigmoilopsis schlumbergeri (Silvestri) ; Margreth, p. 104, pl. 11, fig. 5a-c. 2012 Sigmoilopsis schlumbergeri (Silvestri) ; Milker and Schmiedl, p. 69, fig. 18.7-8. 2014 Sigmoilopsis schlumbergeri (Silvestri) ; Panchang and Nigam, pl. 14, figs. 12a-c, 13a-c. Description. Test oval, wall porcelaneous, outer layer composed of agglutinated material, surface rough; chambers obscured, chamber arrangement sigmoidal initially, later planispirally arranged; periphery broadly rounded, sutures indistinct; aperture terminal, circular on a non-agglutinated, short neck, bordered by a weak rim, with a short tooth.